1936. Project: 10-197 Scale: 1:1200 Connects to sheets 21, 23 Image is from a copy of the original on Mylar. Drawn by M. Hauser July 1936 approved Book N...
1936. Project: 10-197 Scale: 1:1200 Connects to sheets: 106, 108 Image is from a copy of the original on Mylar. Drawn by N. A. Houser 10-2-36 approved.