1937. Project: 10-197 Scale: 1:2400 Image is from a copy of the original on Mylar. Drawn by A.L.B. Sept. 1937.
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1937. Project: 10-197 Scale: 1:2400 Image is from a copy of the original on Mylar. Drawn by H.B. Nov.'37.
1937. Project: 10-197 Scale: 1:2400 Image is from a copy of the original on Mylar. Drawn by H.B. Nov.'37.
1937. Project: 10-197 Scale: 1:2400 Image is from a copy of the original on Mylar. Drawn by H.B. Nov.'37.
1937. Project: 10-197 Scale: 1:2400 Image is from a copy of the original on Mylar. Drawn by A.L.B. August 1937.
1937. Project: 10-197 Scale: 1:2400 Image is from a copy of the original on Mylar. Drawn by H.B. Dec. '37.
1937. Project: ST. 70. Scale: 1:2400, 1:480, .25:12 Connects to sheet 3,5 Image is from a copy of the original on Mylar. Drawn by H.B. Mar. '37 Topograph...
1937. Project: ST. 70. Scale: 1:2400, .5:12 Connects to sheet 4 Image is from a copy of the original on Mylar. Drawn by A.L.B. April '37 topography taken...
1937. Project: ST. 70. Scale: .5:12 Image is from a copy of the original on Mylar. Drawn by H.B. Jan. '37 All details on this sheet refer to sheet no. 3 ...
1937. Project: S-F2-198 Scale: 1:2400,.5:12, vert. scale 1:120 horz. scale 1:480 Image is from a copy of the original on Mylar. "completed under W.P.A. 1...