i picked up a reprint of the Muybridge book a couple of years ago--quite a treat!--at Borders or some such. Don't be discouraged if you are looking. There's another out-of-print book (alas!) that Robin Wood turned me onto about a hundred years ago, and it was called Caught in Motion, and had a ton of stills of birds and critters in flight. Quite wonderful. Totally pre-3D. Probably worth searching for.