Later then your era but The Penn Central color guide has a picture of a F30D in Butler, Wisconsin. I think your pretty safe having one out west.

After Trailer-Train was formed in 1955 I think you could find them anywhere. I'm not sure about before that.

Here's the one's from my lists (1965).

TTX 475021 TRAILER(S) TF 425 2205 5/19/1965 43 S CGWZ 501906

TTX 475021 TRAILER(S) TF 425 2205 5/13/1965 43 S

TTX 475021 MEAT TF 2205 425 5/17/1965 90 N

TTX 475021 MEAT TF 2205 425 5/28/1965 192 N CGWZ 504206 500946

TTX 475021 TRAILER(S) TF 253 2531 7/30/1965 41 S

TTX 475021 TRAILER(S) TF 1000 2531 5/5/1965 43 S

TTX 475021 FR MEAT TF 2313 425 7/28/1965 192 N BOOKEYS CGWZ 504033

TTX 475021 TRAILER(S) TF 2531 1211 5/9/1965 42 N

TTX 475090 MEAT TF 2313 425 5/28/1965 192 N CGWZ 504029

TTX 475090 TRAILER(S) TF 417 2313 5/25/1965 43 S ICZ3000024 (STEEL)

TTX 475090 TRAILER(S) TF 417 2254 5/30/1965 43 S CGWZ504043

TTX 475099 TRAILER(S) TF 417 2313 5/25/1965 43 S NYCZ7319

TTX 475099 TRAILER(S) TF 425 2254 5/28/1965 43 S TRZ270118 (BLOWERS)

TTX 475099 TRAILER(S) TF 2313 425 5/27/1965 192 N CGWZ 504231

TTX 475120 MDSE TF 417 2531 5/20/1965 41 S PRR 200345

TTX 475120 MEAT TF 2313 425 5/28/1965 192 N CGWZ 504045

TTX 475120 TRAILER(S) TF 417 2313 5/30/1965 43 S CGWZ504093

TTX 475120 TRAILER(S) TF 1000 2531 7/29/1965 41 S

TTX 475212 TRAILER(S) TF 425 2205 5/21/1965 43 S S CGWZ504252

TTX 475212 BAKE GDS TF 2531 1211 5/10/1965 92 N

TTX 475212 MEAT TF 2205 425 5/25/1965 192 N CGWZ 504052

TTX 475212 TRAILER(S) TF 417 2313 5/18/1965 43 S DX7353

TTX 475212 TRAILER(S) TF 2313 425 5/20/1965 192 N CGWZ 504272

TTX 475264 MEAT TF 2205 425 7/31/1965 192 N CGWZ 504008

Station 2205 is Waterloo.

Jason