Where can you find replacement globes for an American camper propane single mantle trail lantern?

A Coleman globe that fits models 222, 226,229, 3022, 3023, 3150, 5130, 5133, 5134, 5136, 5414 and Peak 1 should fit your lantern. I have a Therwex one on mine (Brazilian made). It is approximately 3 1/4" high by 3 3/16" diameter.

Check ebay, Amazon and the Coleman homepage