Not the last mainline electric freight in the United States
CSS&SB Russias #802 & #803 were the last mainline traction freight in the United States (also the last locomotive-framed non-steam locomotives in the United States; only the Fepasa Lobas, V-8s & Russias outlived them in the Americas), but #801 just sat in the shop yard at Michigan City until the power was metaphorically turned off, and then was hauled to a scrapyard instead of the railroad museum it should have gone to.