Advertising Poster Winston Churchill Massey Harris Farm Equipment. Original vintage advertising poster from a calendar (now missing) for Massey Harris Slim�s Garage High-Grade Farm Implements Stoves and Heaters, B-A Oil Products, Tires, Radios in Minitonas, Manitoba, featuring a portrait of Rt. Hon. Winston Churchill PC, CH, MP. Printed in Canada. Poor condition, repaired tears through image, staining, creasing, staples on bottom edge, paper loss on bottom edge. Country of issue: Canada, designer: Unknown, size (cm): 53x34, year of printing: 1940s.