1937 eng Photograph of Laurence Sylvester's tractor. 1 photograph : b&w Sylvester, Laurence Tractor 1 HHSC HHS image_photo image HHS.001.10.012_001 OK ark:/67531/metadc2305675 2024-04-15, 06:20:24 False kcoley 2024-04-19, 11:27:27