It's interesting to see how many early photos there are of Caroll Spinney wearing half of the Big Bird suit, considering he's made a policy for so long of not posing for pictures in half the suit. In a recent interview he said that it's because in 1970 a photographer from Look Magazine managed to get a picture and Jim Henson then told him not to let that happen again. And a few pictures show other people in the suit (I can't identify them... Could one of them be Daniel Seagren?).
There's a few things I find awkward/interesting... On the various performer pages, after listing the characters they often end with either "Anything Muppets" (some say "assorted anythign muppets", some say "Ocassional anythign muppets"), and some just say "etc.", but on Jerry Nelson's page, it lists "anything muppets" and then a "etc."
On the Richard Hunt page, there is a quote from an interview during season thirteen. Before the quote it points out that that's "the year his blind muppet Aristotle was introduced". That's fine, but the quote doesn't really have anything to do with the character. I don't know what the point of that was. Of course Aristotle wasn't listed among his characters (one nitpick I have is that Sully was also ommitted... Grrrr....).
There's a few pictures that appear to be mirror-reversed, though I've never seen the pictures elsewhere so I don't know for sure. There's a picture of Richard with Ernie hanging from his arm. It appears that he was operating the left hand as opposed to the right hand (though he could have been performing the body andd right hand, maybe for a pre-recorded song that Jim might not have been available for). And in the "colorful characters" section, there's a few on-location shots of the Count that look like Jerry Nelson was performign the body and the right hand, with an assistant as the left (though on recent inspection I can see that it's definately a reversed view... the monacle is in front of the wrong eye).
In that same section, when listing some of the characters that have come and gone, it says that Roxie Marie is the niece of "Biff (the one that talked)". But there's not really any discussion of Biff and Sully as a duo, casual fans unfamiliar with them might not know what it's talking about (according to the index Sully is never mentioned by name... But there is a picture of the duo in the alphabet section).
I like how many script pages, sheet music, and official documents are pictured (it was interesting looking at Ray Charles' contract... I would have thought it'd be written in braile), but don't like how portions of many are blocked or obscured. I especially don't like how they put The Count so close to the file of guest stars, to the point that his elbow blocks some names out. Also, and this might belond in a general discussions thread, there are times when the clapboards are pictured and under show it says "WILD". ANybody know what "WILD" means in this case?
Much of this book looks like it could be an honorary "Sesame Street: The Ultimate Visual Guide". Like the "Ultimate Visual Guide" books released by DK, most sections are two-pages long (though there are some that last longer).
Finally, I wonder why it was called "Toy Timeline". There were lots of toys shown in the timeline, but very little mention of years each toy came out. The section had two different timelines (one at the top of the page, one at the bottom), one of which was about notable non-Sesame Street things that have happened, the bottom focusing on Sesame Street but not much toy history.
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I especially love all the sheet music. 
