Photograph of a work area for the Photostat and blueprint drafting section at the Sacramento Air Depot, California, March 20, 1940. Two men work with the drafting equipment.
Inscription: "Photostat & blueprint drafting section. Eng. Dept. S.A.D.…
Photograph of the machine shop at the Sacramento Air Depot, California, March 20, 1940. Several people work on engines and other aircraft parts.
Inscription: "Machine shop. Eng. Dept. S.A.D. 3-20-40. S.A.D. 40-115."
Photograph of a work area for aircraft engine subassembly at the Sacramento Air Depot, California, March 20, 1940.
Inscription: "Engine sub-assemblies. Eng. Dept. S.A.D. 3-20-40."
Photograph of men working on aircraft ignitions-starters and generators at the Sacramento Air Depot, California, March 20, 1940.
Inscription: "Ignition-starters and [generators]. Eng. Dept. S.A.D. 3-20[-40]. S.A.D. 40-114."
Photograph of Martin B-10/B-12 aircraft undergoing disassembly and repair at the Sacramento Air Depot, California, circa, 1940s.
Inscription on verso: "S.A.D. circa 1940. Martin B-10 rework."
Photograph of Martin B-10/B-12 aircraft being assembled at the Sacramento Air Depot, California, circa, 1940s.
Inscription on verso: "S.A.D. (S_ Air Depot). B-10 bomber assy [assembly]. Circa 1940."
Photograph of an inspection room for engines and other aircraft parts at the Sacramento Air Depot, California, March 20, 1940. Signs denote workrooms for carburetors, magnetos, starters, and ignition generators.
Inscription: "Engine tear down &…
Photograph of a work area at the Sacramento Air Depot, California, March 20, 1940. Several people work on sheet metal components for aircraft.
Inscription: "Sheet metal – tanks & welding. Eng. Dept. S.A.D. 3-20-40."
Photograph of Martin B-10/B-12 aircraft undergoing disassembly, cleaning, and repair at the Sacramento Air Depot, California, March 20, 1940.
Inscription: "Dissassembly [disassembly] & cleaning & fuselage repair. Eng. Dept. S.A.D.…