Exterior, three-quarters view showing Western Maryland diesel locomotive #81, an EMD BL2, “slug” #138T, and Chessie System caboose at Hagerstown, Maryland on October 27, 1973. EMD designed the BL2 locomotive for branch line service (hence the “BL” designation), but it was soon supplanted by the far more popular GP-series. WM soon relegated its BL2s to working in and around freight yards. #81 is paired with “slug” #138T, a unit without a diesel engine and powered by the “mother” unit to provide extra tractive effort in slow-speed service. Both units still wear WM black and gold, although the WM was already a part of the Chessie System Railroads, whose new colors can be seen on the caboose at left.