Congratulations to Sheila Brennan for a successful defense of her dissertation today! Sheila's dissertation, entitled "Stamping American Memory: Stamp Collecting in the U.S., 1880s-1930s, completed under advisor Alison Landsberg and committee members Michael O'Malley and James Snead. Thanks to all of them and also to Roy Rosenzweig who was an integral part of the formation of the project. We're all very proud of you, Sheila, our seventh George Mason University history Ph.D. Best, Steve Barnes