Contains photographs for “Caught in a Rip Off #73028;” “Americana: The Rural Telephone #73043;” “Struggle for Vicksburg #73067;” “Gettysburg 1863 #73068;” “Roto Rooter #73071;” “A Day In a Squadron: U.S. Navy #73074;” “Elementary Natural Science: Songbirds #73076;” project for Farm Credit #74008; project for Caterpillar #74013; “The Climber #74018;” “Henry More for Moline #74032;” “Recycling Animal Wastes #74411;” “What Farm Exports Mean to You #74414;” “Canadian Waste Management #74416;” “Breakthrough in Preventing Feedlot Bloat #74417;” “Peace River #74418;” “Fava Bean #74419;” “Flower Farming #74427;” “Mick Replacer #74428;” “Open and Close Farming Frontiers #74430;” “Snowmobile race of January 1975 #74440;” “Majority Minority #74504;” “Coins of the World: History in Metal #74506;” “Coal: The Rock that Burns #74507;” “Oil from Fossil to Flame #74508;” “Poultry: Laying It on the Line #74511;” “Soybeans: The Magic Beanstalk #74512;” “Splash! Science and Swimming #74518;” “Thunk! Science of Hitting a Ball #74521;” “School Bus Safety and Courtesy #74524;” “American Phoenix #74536;” “Electrical Safety #74540;” “The Magic Math #74545;” “Fire Safety is Your Problem #74546;” “Nobody Likes Irene #74548;” “Down is Up #75013;” “What is Money? #75019;” “Safe, When the Pressure’s On #75035;” “How Much Is a Farmer’s Time Worth? #75411;” “Foreign Agriculture #75413;” “Aquaculture #75415;” “Battle of the Bangloards [sic] (Cornhuskers) #75420;” “Theft on the Farm #75441;” “Don’t Look Now - But That Silo Just Moved #75429;” “Keeping the Ditches Clear #754443;” and “Weed Control by Weed Eating Bugs #754444.”