This is is the download site for J.Propp and D. Wilson's article "Exact sampling with coupled Markov chains and applications to statistical mechanics", which appeared in Random Structures and Algorithms 9 (1996), 223-252.

There's a low-bandwidth version and a high-bandwidth version. (The second version is missing the 4 megabytes of Postscript code for one of the illustrations; if you're having trouble loading the second version, or if you want something that will produce hardcopy in reasonable amount of time on a klunky printer, try the first version instead.)