Pennsylvania Railroad GG-1 4912, built by the railroad's Altoona shops in 1942, appears here at the 1948 Chicago Railroad Fair nose-to-nose with T1 duplex 4-4-4-4 5502. Emma June Bangert took the photo, supplied by her son Larry Bangert. GG-1 4912 carried the same number into Penn Central, then became Amtrak 912 but resumed its original number before being retired.