Project: 7-149 1685-11 Scale: 1:2400 Connects to Sheets: 24, 25, 26, 28, 30 Image is from a copy of the original on Mylar. For general notes covering Topographical Survey see Key Sheet No. 1 of 34. Contour interval 2 feet and 10 feet as indicated. Contains Bench Mark Description chart. 1936-1938