Marvel Encyclopedia: The Avengers

I am sure you're all at least somewhat familiar with The Avengers, an organization of superheroes in the Marvel universe, many created or co-created by the famed Stan Lee.  If there were a pantheon of comic book writers/creators of superheroes, probably he would be the equivalent of Zeus.  But anyway.  The release of the live action Avengers movie inspired me to finally read my copy of the Marvel Encyclopedia, Avengers edition.  Of this group, you're most likely acquainted with Iron Man, Captain America, Thor, Hulk, and now also Black Widow (the Natasha Black Widow).  

What not everyone knows, however, is that The Avengers has a rotating active membership, with a large number of reserve members as well.  Some of these other members are recognizable from the X-Men, such as Wolverine and Storm, and others are known on their own, like Spider-Man.  Others are likely to be new faces to some, or many, of you.  People like Squirrel Girl, or maybe the Kelsey Leigh incarnation of Captain Britain.  

This encyclopedia doesn't just provide biographies, however.  You're given a complete rundown of the characters' other group affiliations and solo endeavors; their gear and abilities; aliases; known relatives, the title in which they made their first appearance, among other such trivia.  In some cases, for example, Hulk, She-Hulk, and Wasp, multiple images are provided which show different variations of the character, whether it is a change in the art style or simply a change in the character's form or costume.