Mountain Man Work Shirt Pattern Mountain Man Work Shirt Pattern. Sizes Small (36) through XX-Large (50) may be made using this pattern. Wonderful for Colonial, Revolutionary War, 18th century, Mountain Man, Rendezvous, Louis and Clarke, Colonial, American Revolutionary War, Fur Trade, Trapper Impressions. Excellent for Mountain Man, Western Expansion, Daniel Boone, Green River Rendevoux Impression Wonderful for Fur Trade Era, Trapper, Western Expansion, French Indian War or American Revolutionary War or Colonial Impression Great for SASS and Pow Wow living history events.