A farm tractor operated by Roy S. Tucker United Nations Relief and Rehabilitation Administration CNRRA / 99 Cancelled number: UNRRA / 1800 UNRRA photo by Rothstein -- Neg no 99 Chinese National Relief and Rehabilitation Administration China Farming -- China Farming -- China -- Henan Sheng Tractors -- China -- Henan Sheng Farmers -- China -- Henan Sheng Vocational education -- China -- Henan Sheng Tucker, Roy S United Nations Relief and Rehabilitation Administration -- People RM http://search.archives.un.org/s-0801-0001-07-00087 S-0801-0001-07-00087 Security level: Unclassified