During the month of March, the Cherokee Strip Regional Heritage Center will host its third annual "Trappings of the Cherokee Strip" show of fine Western art and custom cowboy gear. This year the Trappings show will feature 15 of Oklahoma's best Western artists and craftsmen. For half of the artists, this will be their first year to participate while the other half are artists who have been in one or all of the Trappings shows. John Rule, a sculptor and…