author
1872–1943
Best known for a practical candy-making handbook that kept being revised and reissued, this early-20th-century confectionery writer shared working recipes, soda formulas, and shop advice for people who wanted to make and sell sweets. His surviving reputation rests on how useful and hands-on the book remained for professionals and ambitious beginners alike.

by W. O. (Will O.) Rigby
W. O. (Will O.) Rigby is remembered as the author of Rigby's Reliable Candy Teacher and Rigby's Reliable Candy Teacher and Soda and Ice Cream Formulas, practical manuals on confectionery that were published in Topeka, Kansas in the early 1900s. Library and catalog records connect him closely with confectionery instruction, and later editions also credit Fred Rigby as a co-author.
The books were designed as working guides rather than literary projects. They gathered recipes, formulas, and trade know-how for candy making, soda fountains, and ice cream service, suggesting that Rigby wrote from direct professional experience in the business. The repeated editions point to a book that found a real audience among shop owners and makers.
Reliable biographical detail about Rigby himself is limited in the sources I could confirm, so this portrait is necessarily brief. What stands out clearly is his role in passing along practical candy-making knowledge in a form that stayed useful long after its first publication.