- Machetes
- Machine guns
- Machine sewing USE Sewing machines
- Machine shops
- Machinery
- Machinery industry
- Machines, Coin operated USE Coin operated machines
- Machines, Milling USE Milling machines
- Machismo
- Macrophotographs
- Madness USE Mentally ill persons
- Madonnas
- Madrasahs
- Madrasas USE Madrasahs
- Magazine covers
- Magazine illustrations USE Periodical illustrations
- Magazine posters USE Book & magazine posters
- Magazine publishing industry
- Magazine vendors USE Newspaper vendors
- Magazines USE Periodicals
- Magazines (Military buildings)
- Magen David
- Magic
- Magic lantern slides USE Lantern slides
- Magic lanterns USE Projectors
- Magic posters USE Theatrical posters
- Magical devices
- Magicians
- Magistrates USE Judges
- Magnetic healing
- Magnetic resonance accelerators USE Cyclotrons
- Magnets
- Magnifying glasses USE Hand lenses
- Magnolias
- Magpies
- Magueys USE Agaves
- Mah jong
- Mahogany trees
- Maidens USE Single women
- Maids USE Servants
- Mail USE Correspondence
- Mail boats USE Mail steamers
- Mail carriages USE Mail wagons
- Mail hacks USE Mail wagons
- Mail planes USE Transport planes
- Mail service USE Postal service
- Mail sleds
- Mail steamers
- Mail trucks
- Mail wagons
- Mail-order businesses
- Mailboxes
- Mailing cards USE Postcards
- Mailmen USE Letter carriers
- Mainstreaming in education
- Maintenance & repair
- Majorettes, Drum USE Drum majorettes
- Majors, Drum USE Drum majors
- Makeshift memorials USE Spontaneous shrines
- Makeup (Cosmetics) USE Cosmetics
- Maladies USE Diseases
- Malaria
- Male chauvinism USE Sexism
- Male figure drawings
- Male gays USE Gay men
- Malediction USE Cursing
- Males USE Men
- Malformations USE Birth defects
- Mallets USE Chisels & mallets
- Malls USE Parks
- Malnutrition
- Maltreated persons USE Abused children
- Mammary glands USE Breasts
- Mammograms USE Mammography
- Mammography
- Mammoth plates
- Mammoths
- Manacles USE Shackles
- Management of land USE Land use
- Mandolins
- Maneuvers, Military USE Military maneuvers
- Manger scenes (Crèches) USE Crèches (Nativity scenes)
- Mangrove plants
- Mangroves USE Mangrove plants
- Manhole covers
- Manholes
- Manière criblée prints USE Dotted prints
- Manicuring
- Manila hemp
- Mannequins
- Manners USE Etiquette
- Manners & customs
- Manors USE Estates
- Mansard roofs
- Manses USE Religious dwellings
- Mansions USE Dwellings
- Manslaughter USE Homicides
- Mantelpieces USE Chimneypieces
- Mantels
- Manufactured houses USE Prefabricated houses
- Manufacturers USE Business people
- Manufacturers' catalogs
- Manufacturing USE Industry
- Manure
- Manuscript repositories USE Archives
- Maoism USE Communism
- Map cabinets USE Map cases
- Map cases
- Map making
- Maple sugar industry
- Maples
- Maps
- Maquettes
- Maracas
- Marathon running
- Marathons
- Marble
- Marble quarrying
- Marble workers
- Marble works USE Monument builders
- Marbles (Game)
- Marches, Political USE Demonstrations
- Marching
- Marching bands
- Marching percussion
- Mares USE Horses
- Margarine
- Margin lights USE Sidelights
- Marihuana USE Marijuana
- Marijuana
- Marine accidents
- Marine animals USE Aquatic animals
- Marine architecture drawings USE Naval architecture drawings
- Marine biology
- Marine drawings
- Marine hospitals
- Marine life USE Aquatic animals
- Marine paintings
- Marine photographs
- Marine prints
- Marine terminals
- Mariners USE Sailors
- Marines (Military personnel)
- Marines (Visual works)
- Marionettes USE Puppets
- Marital infidelity USE Adultery
- Maritime museums USE Naval museums
- Maritime prints USE Marine prints
- Marker works
- Markers, Boundary USE Boundary markers
- Markers, Historical USE Historical markers
- Market gardening USE Truck farming
- Marketing cooperatives USE Cooperatives
- Marketplaces USE Markets
- Markets
- Markings USE Marks (Symbols)
- Marks USE Marks (Symbols)
- Marks (Symbols)
- Marksmanship USE Sharpshooting
- Marmalades USE Preserves
- Marmots
- Marooned
- Marquees
- Marquises USE Marquees
- Marriage
- Marriage certificates
- Marriage licenses
- Marriage proposals
- Marshes USE Wetlands
- Martello towers
- Martial arts
- Martial law
- Martians
- Martyrs
- Marxism USE Communism
- Mascots
- Masks
- Masochism
- Masonic buildings
- Masonic organizations USE Fraternal organizations
- Masonry
- Masquerades
- Mass burials
- Mass transit
- Mass, Catholic USE Religious services
- Massacres
- Massage
- Masseurs
- Masters of ships USE Ship captains
- Mastodons
- Matadors USE Bullfighters
- Match industry
- Matchcovers
- Matches
- Materials
- Materials handling USE Shipping
- Maternity clothes
- Maternity hospitals
- Math USE Mathematics
- Mathematicians
- Mathematics
- Matrimony USE Marriage
- Matzos
- Mausoleums USE Tombs & sepulchral monuments
- Maxims USE Proverbs
- May poles
- Mayoral elections USE Political elections
- Mayors
- Mazes
- McCarthyism
- Meadows
- Meal industry USE Flour & meal industry
- Meals USE Eating & drinking
- Measles
- Measured drawings
- Measurement USE Measuring
- Measures USE Weights & measures
- Measuring
- Meat
- Meat cutting
- Meat industry
- Meat industry strikes
- Meatcutting USE Meat cutting
- Mechanical computers USE Calculators
- Mechanical drawings
- Mechanical spring industry
- Mechanical systems
- Mechanical systems components
- Mechanical systems drawings
- Mechanical toys
- Mechanical works
- Mechanics (Persons)
- Mechanics, Aviation (Science) USE Aviation mechanics (Science)
- Medallions USE Medals
- Medallions (Ornament areas)
- Medals
- Mediation of industrial disputes USE Industrial arbitration
- Medicaid
- Medical aspects of war
- Medical buildings USE Health care facilities
- Medical care USE Health care
- Medical colleges USE Medical education
- Medical drawings USE Medical illustrations
- Medical education
- Medical equipment & supplies
- Medical illustrations
- Medical insurance USE Health insurance
- Medical libraries
- Medical offices
- Medical personnel
- Medical schools USE Medical education
- Medical screening
- Medical students
- Medicare
- Medicinal plants
- Medicine
- Medicine men USE Shamans
- Medicine shows
- Medicines
- Meditation
- Mediums
- Medlar trees
- Medreses USE Madrasahs
- Medressehs USE Madrasahs
- Meeting houses, Friend USE Friends' meeting houses
- Meeting rooms USE Conference rooms
- Meetings
- Megalethoscope photoprints USE Megalethoscope prints
- Megalethoscope prints
- Megaphones
- Melainotypes USE Tintypes
- Melancholy USE Depression (Mental state)
- Melodramas
- Melons
- Membership campaigns
- Membership cards
- Membership certificates
- Membership drives USE Membership campaigns
- Memorabilia
- Memorial arches
- Memorial flowers USE Flower arrangements
- Memorial photographs
- Memorial rites & ceremonies
- Memorial services USE Memorial rites & ceremonies
- Memorial works
- Memorials USE Monuments & memorials
- Memory USE Reminiscing
- Men
- Men & women USE Relations between the sexes
- Men in women's clothing USE Cross dressing
- Mennonite churches
- Menopause
- Menorahs
- Mensoles USE Keystones
- Mensuration USE Measuring
- Mental healers USE Healers
- Mental health
- Mental health care USE Psychiatry
- Mental institutions
- Mental prayer USE Meditation
- Mental states
- Mentally handicapped children
- Mentally ill children
- Mentally ill persons
- Mentally retarded children USE Mentally handicapped children
- Menus
- Mercantile facilities
- Mercenaries (Soldiers)
- Mercenary troops USE Mercenaries (Soldiers)
- Merchandise displays
- Merchandise exchanges
- Merchandising USE Selling
- Merchant seamen USE Sailors
- Merchants
- Merchants' exchanges
- Mercury mining
- Merit system USE Civil service
- Mermaids
- Merry-go-rounds
- Mesas
- Meshrebeeyehs
- Mess halls
- Messengers
- Metal buildings
- Metal cuts
- Metal work USE Metalwork
- Metallurgical industry
- Metalpoint drawings
- Metals
- Metalwork
- Metalworking
- Metamorphic pictures
- Metamorphosis
- Meteorological instruments
- Meteorology
- Methodist churches
- Methodist Episcopal churches
- Metoposcopy USE Physiognomy
- Metric measures USE Weights & measures
- Metro stations USE Subway stations
- Metronomes
- Mexican sisal USE Henequen (Plant)
- Mezzanines
- Mezzotints
- MIA's USE Missing in action
- Mica mining
- Mice
- Microbes USE Bacteria
- Microfiche
- Microfiches USE Microfiche
- Microfilms
- Microforms
- Microopaques
- Microorganisms
- Microphotographs
- Microprints USE Microopaques
- Microscopes
- Microwave ovens
- Middle age
- Middle class
- Middle classes USE Middle class
- Midgets USE Dwarfs
- Midlife USE Middle age
- Midlife crisis
- Midways
- Midwives
- Migrant agricultural laborers
- Migrant laborers
- Migration, Internal USE Internal migration
- Migratory workers USE Migrant laborers
- Mihrabs
- Milestones
- Militants USE Activists
- Militarism
- Military academies
- Military air pilots
- Military air shows
- Military aircraft nose art USE Nose art
- Military art & science
- Military assistance
- Military bands
- Military bases USE Military facilities
- Military camps
- Military ceremonies USE Military parades & ceremonies
- Military colleges USE Military education
- Military cookery
- Military courtesy USE Saluting
- Military decorations
- Military demobilizations
- Military depots
- Military deserters
- Military discharges
- Military education
- Military exchanges
- Military exercises USE Military training
- Military facilities
- Military flags USE Military standards
- Military headquarters
- Military hospitals
- Military inspections
- Military installations USE Military facilities
- Military intelligence
- Military intervention USE Intervention (International law)
- Military leadership
- Military life
- Military maneuvers
- Military medicine
- Military mobilizations
- Military occupations
- Military officers
- Military organizations
- Military parades & ceremonies
- Military personnel
- Military police
- Military policy
- Military rations
- Military reconnaissance
- Military regimes
- Military reservations
- Military retreats
- Military schools USE Military academies
- Military science USE Military art & science
- Military scouts
- Military service
- Military spouses
- Military standards
- Military stations USE Military facilities
- Military students USE Cadets
- Military surplus stores USE Army-Navy stores
- Military tactics
- Military training
- Military uniforms
- Military vehicles
- Military wives USE Military spouses
- Militia movements
- Militias
- Milk
- Milk cans USE Cans
- Milk industry USE Dairying
- Milk peddlers USE Milkmen & milkwomen
- Milking
- Milkmen & milkwomen
- Milkweeds
- Millers
- Millet
- Millinery
- Millinery stores USE Millinery
- Milling machinery USE Milling machines
- Milling machines
- Milling trade USE Flour & meal industry
- Millionaires
- Millraces
- Mills
- Millwork
- Mimbars USE Minbars
- Mimetic buildings
- Mimicry USE Imitation
- Minarets
- Minbars
- Mind reading USE Telepathy
- Mindreading USE Telepathy
- Mine accidents
- Mine buildings
- Mine railroad cars
- Mine railroads
- Mine rescue work
- Mine warfare
- Mineral deposits
- Mineral springs USE Springs
- Mineral water USE Water
- Mineral waters
- Minerals
- Miners
- Miners' equipment & supplies USE Mining equipment
- Miners' strikes
- Miners' unions
- Mines USE Mining
- Mines (Warfare)
- Miniature cities & towns
- Miniature golf
- Miniature houses USE Dollhouses
- Miniature railroads
- Miniature wood carvings
- Miniature works
- Miniatures USE Miniatures (Paintings)
- Miniatures (Illuminations)
- Miniatures (Paintings)
- Minimum wages
- Mining
- Mining camps
- Mining equipment
- Mining tools USE Mining equipment
- Miniskirts
- Ministers (Diplomatic agents) USE Diplomats
- Ministers of the gospel USE Clergy
- Minks
- Minorities
- Minority groups USE Minorities
- Minstrel posters USE Theatrical posters
- Minstrel shows
- Minstrels
- Mints
- Minuets
- Minutemen (Militia)
- Miracles
- Mirages
- Mirrors
- Miscegenation USE Interracial marriage
- Miserliness
- Misers
- Misery USE Distress
- Misrepresentation (Law) USE Fraud
- Missiles
- Missiles, Guided USE Rockets
- Missing in action
- Missing persons
- Mission churches
- Missionaries
- Missions
- Mistletoe
- Mistrust USE Suspicion
- Mists
- Miters
- Mittens
- Mixed media
- Mixers, Concrete USE Concrete mixers
- Mizrachs USE Mizriha'ot
- Mizriha'ot
- Moats
- Mobile health units
- Mobile home living
- Mobile homes
- Mobile phones USE Cellular telephones
- Mobiles
- Mobility, Social USE Social mobility
- Mobilizations of armed forces USE Military mobilizations
- Mobs USE Crowds
- Mock-ups
- Model airplanes
- Model cars
- Model houses
- Model railroads
- Model sailboats
- Model schools USE Laboratory schools
- Model ships
- Model submarines
- Model vehicles
- Modeling (Sculpture)
- Models
- Models, Artists' USE Artists' models
- Models, Fashion USE Fashion models
- Modern dance
- Modification of weather USE Weather control
- Modular construction
- Mohammedanism USE Islam
- Molded plywood
- Molding (Clay, plaster, etc.) USE Modeling (Sculpture)
- Moldings
- Molds (Shaping tools)
- Molecular models
- Moles (Animals)
- Mollahs USE Mullahs
- Molotov cocktails
- Monad (Symbol) USE Yin Yang (Symbol)
- Monarchs USE Rulers
- Monarchy
- Monasteries
- Monastic & religious life
- Monastic life USE Monastic & religious life
- Monastic orders USE Religious orders
- Monetary assistance USE Assistance
- Monetary policy
- Monetary question USE Currency question
- Money
- Money crises USE Business panics
- Money lending USE Usury
- Money raising USE Fund raising
- Mongooses
- Monitors (Warships) USE Turret ships
- Monkey wrenches USE Wrenches
- Monkeys
- Monks
- Monochromatic works
- Monocles
- Monograms
- Monoplanes
- Monopolies
- Monorail railroads
- Monotype prints USE Monotypes
- Monotypes
- Monsters
- Monstrances
- Montages
- Months
- Monument builders
- Monuments
- Monuments & memorials
- Moods USE Mental states
- Moon
- Moonlight
- Moonshine stills USE Stills (Distilleries)
- Moor baths USE Mud baths
- Mooring
- Mooring masts
- Moose
- Moose hunting
- Mops & mopsticks
- Moral & ethical aspects
- Moral aspects of war
- Morals USE Ethics
- Moratoriums USE Strikes
- Moravian churches
- Morgues & mortuaries
- Mormon churches
- Morning
- Morning glories
- Mortars (Ordnance)
- Morteotypes USE Memorial photographs
- Mortgages
- Mortuaries USE Morgues & mortuaries
- Mortuary customs USE Funeral rites & ceremonies
- Mortuary practice USE Undertaking
- Mosaic pavements
- Mosaics
- Moslem USE Islam
- Mosques
- Mosquitos
- Moss, Spanish USE Spanish moss
- Motels
- Mothers
- Mothers, Employed USE Working mothers
- Mothers, Working USE Working mothers
- Mothers-in-law
- Moths
- Motifs, Architectural USE Architectural decorations & ornaments
- Motion USE Locomotion
- Motion picture audiences
- Motion picture cameras
- Motion picture devices
- Motion picture direction USE Motion picture production & direction
- Motion picture festivals
- Motion picture industry
- Motion picture photography USE Cinematography
- Motion picture posters
- Motion picture premieres
- Motion picture producers & directors
- Motion picture production USE Motion picture production & direction
- Motion picture production & direction
- Motion picture stills USE Film stills
- Motion picture studios
- Motion picture theaters
- Motion pictures
- Motion sickness
- Motion study photographs
- Motor bus travel USE Bus travel
- Motor courts USE Motels
- Motor lodges USE Motels
- Motor scooters
- Motor vehicles, Amphibious USE Amphibious vehicles
- Motorboat engines USE Boat engines
- Motorboats
- Motorcades
- Motorcycle clubs
- Motorcycle racing
- Motorcycle rallies
- Motorcycles
- Motors USE Engines
- Motto prints USE Emblem pictures
- Moucharabis USE Meshrebeeyehs
- Mouldings USE Moldings
- Mounds (Burials)
- Mounds (Landforms)
- Mountain climbing USE Mountaineering
- Mountain goat hunting
- Mountain goats
- Mountain lions USE Pumas
- Mountain passes USE Passes (Landforms)
- Mountain railroads
- Mountain roads
- Mountain sheep
- Mountain sheep hunting
- Mountaineering
- Mountains
- Mounted police
- Mourning USE Grief
- Mourning clothing & dress
- Mourning customs USE Funeral rites & ceremonies
- Mourning works USE Memorial works
- Mousetraps
- Moustaches USE Mustaches
- Mouth organs
- Mouths
- Movable bridges USE Drawbridges
- Movable feasts
- Movable works USE Mechanical works
- Movement USE Locomotion
- Movement, Freedom of USE Freedom of movement
- Movers USE Moving & storage trade
- Movie cameras USE Motion picture cameras
- Movie posters USE Motion picture posters
- Movie stars USE Actors
- Movie stills USE Film stills
- Movie theaters USE Motion picture theaters
- Moviegoers USE Motion picture audiences
- Movies USE Motion pictures
- Moving & storage trade
- Moving chairs USE Wheelchairs
- Moving of buildings, bridges, etc. USE Moving of structures
- Moving of structures
- Moving pictures USE Motion pictures
- Moving, Household USE Household moving
- Mowing
- Mowing machines
- MS (Disease) USE Multiple sclerosis
- Muckraking
- Mucus
- Mud
- Mud baths
- Mud slides USE Landslides
- Mud volcanoes
- Mudslinging USE Negative campaigning
- Mug shots USE Identification photographs
- Muggings USE Robberies
- Mugs USE Drinking vessels
- Mulberry trees
- Mule drivers USE Muleteers
- Mules
- Muleteers
- Mullahs
- Mullas USE Mullahs
- Multiculturalism USE Pluralism (Social sciences)
- Multiple births USE Quadruplets
- Multiple flash photographs USE Motion study photographs
- Multiple marriage USE Bigamy
- Multiple processes USE Mixed media
- Multiple sclerosis
- Multiracial people USE Racially mixed people
- Multiscreen displays USE Multiscreen presentations
- Multiscreen presentations
- Mummies
- Mumming
- Municipal government
- Municipal home rule
- Municipal officials
- Municipal services
- Munitions industry USE Ordnance industry
- Murals
- Murders USE Homicides
- Muscle men USE Strong men
- Muscles
- Museums USE Galleries & museums
- Mushroom clouds
- Mushrooms
- Music
- Music boxes
- Music education
- Music ensembles
- Music festivals
- Music halls
- Music lessons USE Music education
- Music posters USE Concert posters
- Music publishing industry
- Music racks USE Music stands
- Music rooms
- Music schools USE Music education
- Music sheet covers USE Sheet music covers
- Music stands
- Music stores
- Music title pages
- Musical comedies USE Musical revues & comedies
- Musical instrument cases
- Musical instrument industry
- Musical instruments
- Musical notation
- Musical play posters USE Theatrical posters
- Musical revues & comedies
- Musicians
- Musicians' unions
- Musk deer
- Musk ox USE Muskox
- Musk ox hunting USE Muskox hunting
- Musk oxen USE Muskox
- Musketeers
- Muskets USE Rifles
- Muskox
- Muskox hunting
- Mustaches
- Mustard
- Mustering out USE Military discharges
- Mute persons
- Mutinies
- Mutographs USE Motion picture devices
- Mutoscopes USE Motion picture devices
- Mynahs
- Mythical creatures USE Supernatural beings
- Myths