If you ever need to look for the Marvel Handbook (that's what it was called!) it came in two flavors. The first - a simple collection of pages in standard comic form with a single image representing the character. Fairly useless beyond an informational tool.

The second form - the more recent one - was a series of looseleaf pages, each with a turn around of the character in question (front, side, back views) and a bio.  Broken up by alphabet.  A great source for superhero body types but also extremely hard to find.