REMOVE

1. Bulletin
2. Operations
3. Cobre
4. Shafter

WHAT

1. Passenger (2)
2. SP (2)
3. Caboose (1)

WHERE

1. Copper Flat (1)
2. Currie (1)
3. Decoy (1)

WHO

1. Armstrong, W.R. (1)
2. Beem, H.J. (1)
3. DeLorenzo, A.N. (1)
4. Dougherty, P.L. (1)
5. Fravel, H.A. (1)

WHEN

1. 1930s (1)
2. 1940s (1)
3. 1950s (1)