wolf,
I have some Godzilla suit goodies for you! I tried a new Google Books search and found the following:
Eiji Tsuburaya: master of monsters by August Ragone has a bunch of great pictures relating to the making of and wearing of Godzilla costumes. Page
36 offers a shot of a man working on an ultimately rejected suit, while page
37 offers a little something about the making of the final suit. Page
42 offers both some details on what it was like in the suit and shows just how big the costume's head is and page
43 shows Nakajima emerging from a Godzilla suit in a long-sleeved shirt. It's not the picture I remembered, but I think you'll still find it interesting.
Page
16 of Robert Greenberger's
Meet Godzilla reveals that the crew once checked the suit's temperature and found it reached 60 degrees C/140 degrees F! That page, along with page
17 also offer more details about the suit and its mechanical effects.
Cheap tricks and class acts by John Johnson offers an interesting discussion of how Mr. Nakajima practiced the necessary gait and aspects of the costume's design effecting the walk on page
216.
Oh, and
this should lead to a limited preview of
Anatomy of a Beast: Obsession and Myth on the Trail of Bigfoot by Michael McLeod. Scrolling through it should yield some very interesting notes about Ivan Sanderson and the PGF.