Original World War 2 business trade magazine vintage ad for J W GREER COMPANY. Main office and factory was located in Cambridge, MA.  Now Greer Conveyors Hoist the Ammunition!  The Greer Multi-tier Conveyor holds a leading place in the confectionery and bakery fields because of the unique ingenuity of its construction, precision operation and staunch reliability. Old 1943 WW2 era propaganda industrial magazine advertisement.