SSW 84000-84004:
SSW 84000-84004
These 89'-0" flat cars were built by Thrall in 5-6/1963. They featured Hydra Cushion 20" travel underframes, Barber S-2-C trucks w/ Timken roller bearings and 5/16" H.T.L.A. steel decking. They were originally used in saddleback truck loading.
A photo of one of these cars appears in the 1966 Car & Locomotive Cyclopedia.