• Advertising schools
  
• Air mail service
  
• All motion picture theater
  
• Arcade
  
• Artist successful in commercial art
  
• Automatic telephone system
  
• Automated people mover
  
• Automobile road map
  
• Belt conveyor system
  
• Bible translated to English in America
  
• Bird sanctuary
  
• Book entered for copyright
  
• Book for the blind
  
• Botany professor
  
• Bottler of mineral water
  
• Bubble gum in 1928
  
• Building and Loan Association
  
• Building erected in the United States for public use
  
• Cable television system
  
• Carpet mill
  
• Chemistry laboratory
  
• Christmas savings club
  
• Circus
  
• College for African-Americans
  
• College-level biology course
  
• Commercial high school
  
• Commercial museum
  
• Commercial oil refinery
  
• Commercial pretzel bakery
  
• Commercial production of zinc
  
• Commercial production of aluminum
  
• Commercial radio station
  
• Commercial use of telephone with push buttons
  
• Company-owned service station
  
• Conestoga wagon
  
• Crematory
  
• Daylight Savings Time
  
• Druggist
  
• Dual elevator in service
  
• Electric watch
  
• Electronic computer
  
• Electric meter
  
• Electric motor
  
• Encyclopedia
  
• English patent granted to a resident of America
  
• Fire patrol and fire insurance company
  
• Folding bed
  
• Full-scale nuclear power plant
  
• Geology book
  
• Glass crystal chandelier
  
• Graduate school for women
  
• Groundhog Day
  
• Hookless fastening
  
• Hospital
  
• Institution of art
  
• Law digest published
  
• Library
  
• Licensed hunters
  
• Little League baseball
  
• Locomotive for railroad use
  
• Low-rent community housing project
  
• Magazine
  
• Mass transit bus pool purchase plan in the U.S.
  
• Melon grown in U.S.
  
• Mint of the United States
  
• Model school
  
• Mushrooms
  
• Mustard
  
• Nursing school
  
• Passenger cable car (steepest ever built)
  
• Paper mill
  
• Patent for a passenger cable car
  
• Permanent theatre building
  
• Planned community
  
• Platinum metal
  
• Potato chips
  
• Preparation of soda water
  
• Pretzels
  
• Production of cottonseed oil
  
• Production of rayon
  
• Professional football game
  
• Printed ballot for an election
  
• Printer's ink
  
• Public use of polio vaccine
  
• Quinine
  
• Root beer
  
• Rough-dry laundry service
  
• Round-trip airplane flight
  
• Sausage
  
• Scrapple
  
• Steamboat
  
• Steel rolling mill
  
• Successful oil well
  
• Symphony orchestra
  
• Television and radio broadcasts KDKA in Pittsburgh
  
• The Pittsburgh Pirates 1st National League team in a World Series
  
• Tunnel for general traffic and first railroad tunnel
  
• Turnpike
  
• Vaseline
  
• Wallpaper
  
• Water pumping station
  
• Zipper
  
• Zoo