The format is like this: Name, Aliases,Description,Localities Frequented, Family Background, Criminal Associates, Criminal History, Business, and Modus Operandi. Some have a picture, and some do not. This collection, I would guess, to be pre 1965ish. I had fun looking up old houses and hangouts on google. It would be a great source for genealogical research. So many in those circles did not fill out census, draft records, etc. The treasury department lists parents, spouses, siblings, and where they were all from. Some in the book I couldn't find any information on, which was mysterious.