1935. Project: S-F2-198 Scale: 1:600 Connects to Sheets: 22, 24 Image is from a copy of the original on Mylar. Drawn April 11, 1935 Checked April 22, 19...
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1935. Project: S-F2-198 Scale: 1:600 Image is from a copy of the original on Mylar. Drawn April 19, 1935 checked April 22, 1935 Drawn by G. Betz Includes...