This lot has Northern Pacific Railway's Wonderland Series #1, #2, and #3 stamps of Yellowstone National Park scenes. Originally issued in the teens prior to 1920 to promote tourism. Two complete sheets of ten stamps from series #2 & #3, and five stamps from series #1. Various scenes from throughout Yellowstone Park including the iconic images of bears feeding from garbage cans. Stamps are in very good condition, minor tears at some perforations otherwise fine. Sheets measure 8.75"L x 6.75"W and 8.75"L x 5"W respectively