Photograph of Sweetwater's Municipal Airport hangar, a large, metal building with the hangar's name in large letters on the front. There is a metal tower to the right of the hangar, and a long road going past the right of the building. Text at the bottom of the photo indicates the location and date of the photo. A note can be seen written on the back of the photo: "Sweetwater Municipal Airport- The first hangar built in 1929 on South side of the field. Photo taken in 1941".

Photograph of Sweetwater's Municipal Airport hangar, a large, metal building with the hangar's name in large letters on the front. There is a metal tower to the right of the hangar, and a long road going past the right of the building. Text at the bottom of the photo indicates the location and date of the photo.

Photograph of Sweetwater's Municipal Airport hangar, a large, metal building with the hangar's name in large letters on the front. There is a metal tower to the right of the hangar, and long road going past the right of the building. Text at the bottom of the photo indicates the location and date of the photo.

Photograph of Helen Snapp and a young man walking down a street, dressed in civilian clothing. The man is wearing a dark-colored suit, and Snapp is wearing a dark-colored dress.

Technical manual TM 1-405 from the United States War Department about aircraft engines. Prepared under direction of the Chief of the Air Corps. The booklet is divided into six sections: I. Internal-combustion engine principles, II. Classification and description of engine types, III. Description and construction of engine units, IV. Repair principles, V. Engine lubrication, and VI. Engine cooling. All chapters include information and drawings for reference.

Booklet titled "Complete Examination Questions and Answers: Aerial Navigation for Student, Private, and Commercial Pilots" meant to quiz pilots on the science of Aerial Navigation.

Photograph of a large crack in a concrete slab with water damage on it. There is some dirt at the bottom of the image and the bottom section of a wall at the top.

Letter from Standard Oil Company of California to Aeronautical Training Center, Inc. discussing a previous letter from March 25, 1941.

Letter from Standard Oil Company of California to Aeronautical Training Center, Inc. discussing a recent contract signed five days prior.

Letter from Frank E. Nattier, Jr. to Charles A. Prince discussing the next step Prince should take in his effort to build the Plosser-Prince Air Academy.

Plosser-Prince Air Academy memo regarding salary costs from Corsicana.

Telegram from Mary K. Fidlar to Charles A. Prince discussing the changing of personnel at Plosser-Prince Air Academy. Also contains original telegram envelope.

Four comparative balance sheets covering assets, liabilities, net worth, total revenue, instruction and student expenses, and profit and loss statements.

Contract between Standard Oil Company of California and Aeronautical Training Center wherein the Standard Oil Company is the seller and the Aeronautical Training Center is the buyer.

Pamphlet from the Medal of the Month Club with a cartoon and short biography about the life of Amelia Earhart. A short introduction paragraph explains the purpose of the Club is to teach children about American aviation heroes.

Textbook titled "Civil Pilot Training Manual" describing introductory material related to flying aircraft, such as theory and fundamentals of flight and the use of instruments and safety gear. Catherine Parker's name is handwritten on the bottom left corner of the cover as well as on the title page.

Flight school class notes on various aviation topics handwritten by Solange D'Hooghe.

Textbook titled "Digest of Civil Air Regulations for Pilots" describing basic regulations for pilots such as rules of flight and various certifications. "S. D'Hooghe" is handwritten in the top right corner of the cover.

Letter from Mrs. Earl Kuenning to Mickey McLernon informing her that she will sent her some pictures of Tom, thanking her for giving him hospitality, telling her about his travels, and wishing her happy holidays.

Manual for flight instructors prescribing a specific course of learning for aviation students in both classroom and practical settings in an effort to standardize flight instruction. The signature of Rigdon Edwards, Jr. can be seen inside the cover and a combination of drawings and notes in pencil can be seen in the back of the book.

Excerpt from training manual for piloting airplanes outlining the elementary flight course, including familiarization with the airplane and parachute, communication, local air traffic rules, taxiing, and other introductory information.

Manual for the flight and operation of two military basic training planes manufactured by Vultee Aircraft, Inc., the BT-13A and the BT-15.