70th Annual Threshermen’s Reunion | Piggyback Steam Engine Labor Day weekend Sunday brings the Threshermen’s Reunion parade to downtown Pontiac. This steam engine gets a piggyback ride on flatbed pulled by a big Kenworth. The parade draws a rather large crowd. It’s headed by piggybacked steam engines, but includes floats, fire engines from surrounding towns, marching bands, Shriner club cars etc. To learn more, see 70th Annual Threshermen’s Reunion | a 7 Image Story.
