REMOVE

1. Operations
2. Gray, V.F.
3. Nesbitt, C.

WHAT

1. Correspondence (2)
2. Steam (2)

WHO

1. Albright, G.C. (1)
2. Beem, H.J. (1)
3. Fravel, H.A. (1)

WHEN

1. 1930s (1)
2. 1940s (1)