Drafting Trainee, U.S. Geological Survey Topographic Division. Location unknown. 1952.

Album caption: Illustration of a drafting trainee, consistent line wieght and smoothness of line is emphasized. An employee is trained approximately two months before going on production. No index card. Note on album: Photographed and compiled by E.F. Patterson, August 1952. Published as figure 23 in the USGS Circular 1341, History of the Topographic Branch (Division). Caption from published photo, Figure 23. Pen-and-ink drafting for map production was used from the early 1940s through the mid-1950s. Inking contours by hadn required a light touch to maintain consistent line weight (1952). Email communication USGS employee on May 26, 2021, "... it looks like a scope they used to determine line widths and spacing. Looks a bit like [...]