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.

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

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

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.