Recently, Stephen Worth posted the 1st edition of Preston Blair's animation book on the Animation Archive Project Blog. This first edition uses MGM characters as opposed to the generic characters used in later printings. After sketching from it I noticed some of the drawings are directly lifted from different MGM model sheets. So I figured I'd post the pages of the book that contain drawings lifted from the model sheet and the actual model sheet with the same drawing.
Marc Deckter compares the original printing with his own copy on his blog Duck Walk. Over at the Inspiration Grab-Bag, Clark Snyde posted screen grabs from the cartoons that Preston Blair animated which were used as examples in the book.