This is apparently a list of people who previously worked on grasshopper control projects for the USDA, but were laid off. The marginalia suggest Walter was looking to recruit some of them back (he’s about to be transferred to grasshopper control). If you wonder why the government had employed so many people for this, or why so many of them got dismissed and then hired back with funding fluctuations, check out Jeffrey Lockwood’s outstanding history of this astonishing pest.

January 1938