Photo of the Milwaukee Road's new S2 4-8-4 Baldwin-built locomotive. Copy from auction- "A vintage 1937 ORIGINAL Photograph depicting Milwaukee Road's Baldwin S-2 4-8-4 Northern Steam Locomotives. "
A copyright search for publication renewals was done for the years 1964 and 1965. There were no listings for any publications with "Minneapolis" or "Minnesota". There's no evidence copyright continues to be claimed on the material.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
{{Information |Description=Photo of the Milwaukee Road's new S2 4-8-4 Baldwin-built locomotive. Copy from auction- "A vintage 1937 ORIGINAL Photograph depicting Milwaukee Road's Baldwin S-2 4-8-4 Northern Steam Locomotives. " |Source=[http://www.ebay.c...