Quoting from Larry Goss' site url:
http://users.silcon.com/~lgoss/morebar.htm
to be precise.
The BAR purchased eight EMD BL2 (branchline) locomotives in 1949 numbers 550-557. In 1952 they were renumbered to 50-57. In 1979 two of the units 57 and 54, then in the solid blue scheme, were involved in a grade crossing accident and had to be rebuilt. Number 57 emerged from the shops in 1980 with it's as delivered paint scheme and number. It was given the name "American Railfan" and for a year or so served on excursion trains and revenue freight service before being retired. Number 557 is shown here in storage at Northern Maine Junction before it was moved to the Cole Transportation Museum in Bangor where it rests today.
Number 54 ,the other accident victim, emerged from the shops in the then current tri-color scheme and served for a couple of years before being sold or donated for excursion service in Pennsylvania. Number 54 was the only BL2 to receive the tri-color paint and the last active BL2 on the BAR.