Book: Koterski, James R. 2005 Early Potters and Potteries of Delaware: Historical and Commercial Perspectives, 1760-1890.
• Hare pottery discussed: pp. 75-93. On p. 195, "Operated French Street Pottery from 1839 to 1885; only known Delaware potter to mark his wares."Catalogue: Crocker Farm, Inc. Crocker Farm Auction Catalogue.
• Sale catalogue for March 5, 2001 sale includes a marked William Hare jug dated circa 1870 on p. 49, item no. 342.