1 poster, colour. 'Perkins History of Power in Agriculture' / Art Department, Perkins Engines Limited, 1965, printed by Balding + Mansell, [Wisbech?], England, information researched by Tom Gilling, MIAgrE. [vignettes of pioneers of agriculture, human power of yesteryear, power implements of today, anotated drawings of traction engine, tractor hydraulics and engine, harvester] 62 x 109.2 cm.