Pan Am's former Maine Central Rigby Yard in Portland is host to an array of elderly motive power - the mix includes Pan Am (MEC) GP40-2W 511 and MEC GP40 306; MEC GP40 379 by itself; B&M GP40 332, ST GP35 209, with MEC GP40 373; B&M GP40 327, ST GP35 205, and MEC GP40-2W 517.