Since I wasn't sure I had seen all pages of the brochure, an original copyright search was done in pamphlets and periodicals for the year 1939. There were no listings for Atlantic Coast Line Railroad or Palmetto Limited. There's no evidence of any copyright being filed.
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 (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
{{Information |Description=Photo of the ACL train the Palmetto Limited. |Source=[http://www.ebay.com/itm/BROCHURE-Atlantic-Coast-Line-Railroad-034-Palmetto-Limited-034-1939-/311057504570?pt=LH_DefaultDomain_0&hash=item486c78d93a&nma=true&si=JPdXLF%252B...