My most unmistakable U.S. made pipes would start with my two Dr. Grabows. Dr. Grabow is, as far as I can discern, the largest U.S. maker of briar pipes, and possibly the last of the large U.S. factory briar pipe companies. I also have three Kaywoodie pipes that fill the bill, as does my Yello Bole. To me, U.S. factory pipes are like 1950's American (U.S.) made automobiles, exuberant if showy in design, rock solid when they'r good, and extra shabby when they're not. What are your most distinctly American/U.S. pipes?