This very worthwhile reference book was produced by Thimble Collectors International for their membership. Copyright 1995 and long out of print.
Sew Small : Children’s Needlework Tools was authored by the late Diane Pelham Burn. Di shared here knowledge about these tiny tools in this sixty-one page booklet filled with history, black and white photos as well as color plates. There is also a chapter on Collecting and Conserving — how to keep what you have in tip-top condition.