Does anyone know of a book in existence which documents type foundries' pinmarks? I thought I saw one once, but might very well be remembering a book on printer's marks or union bugs.

BriarPress.org used to have a section devoted to pinmarks which was great, but it's been down since their redesign (http://www.briarpress.org/15798).

I'm also aware of the pinmark Flickr pool, but that still isn't very heavily populated.