Yes, during WWII, the briar growing/harvesting areas were combat zones, so other woods were used for tobacco pipes, such as maple, which is still used, and Mountain Laurel which is only still used by a few pipe carvers. Mountain Laurel is extremely durable and handsome, but probably did not continue much in use because it does not display its grain like briar. For decades after WWII, U.S. made pipes often had a stamp that said "Imported Briar," to point out that the briar was the real thing. Though other members may own them, I am the only member I know of who talks about owning Mountain Laurel pipes, four or five of them.