Chessie System (B&O) EMD GP40-2 # GM50, 1970's. B&O GM50 was painted gold to celebrate GM-EMD's 50th anniversary as a diesel locomotive manufacturer (GM50 got repainted in 1984 and became B&O 4164). Photo courtesy of FAP jr RR Slide Archives 006. The photo location is unknown. The name of the photographer that took this photo is unknown. Copyright Disclaimer under Section 107 of the Copyright Act of 1976, allowance is made for “fair use” for the purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.