You guys obviously have forgotten Richard Hendrickson’s kitbashes of the Athearn gondola, reported in a two-part article in Prototype Modeler magazine (“Mill gondolas and how to model them,” Part 2, Vol. 5, No. 8, November-December 1982, pages 12–16; Part 1 was in the preceding issue, September-October 1982). These show a neat version of the Erie gondola.