Catalogue: Pook & Pook Inc., Downingtown PA (sales cat.).
• Similar cup attributed to Bell family in catalogue for February 22-23, 2003, p. 44, cat.no. 197.Catalogue: Crocker Farm, Inc. Crocker Farm Auction Catalogue.
• The catalogue for the July 16, 2011 sale includes a similar (unattributed) supposedly Strasburg, VA-area egg cup on p. 45, cat. no. 277.