USDA Farmers' Bulletin No. 1972,Donald M. Crooks and Leonard W. Kephart 59555 [Full title: USDA Farmers' Bulletin No. 1972: Poison-ivy, Poison-oak and Poison Sumac: Identification, Precautions and Eradication] [Full author: Donald M. Crooks and Leonard W. Kephart] [Link: http://www.gutenberg.org/5/9/5/5/59555 ] [Files: 59555-8.txt; 59555-h.htm] Thanks to Tom Cosmas compiled from images made available by The Internet Archive. Regards, Al