Stewart Coffin is an American puzzle maker. According to Ars Technica, he is considered to be one of the "best designers of polyhedral interlocking puzzles in the world." (From Wikipedia)
More about Stewart T. Coffin:Books by Stewart T. Coffin:
![[Info]](https://onlinebooks.library.upenn.edu/info.gif)
Coffin, Stewart T.: Puzzle Craft (1985 and 1992 editions) (PDF files at johnrausch.com)- Coffin, Stewart T.: The Puzzling World of Polyhedral Dissections (illustrated HTML at johnrausch.com)
Find more by Stewart T. Coffin at your library, or elsewhere.