Bidspirit auction | 9 Cheyenne, WY Frontier Days

9 Cheyenne, WY Frontier Days Event Covers 1991 - 9 Cheyenne, WY Frontier Days Event Covers 1991 Lot of 9 event covers, celebrating the 95th annual Frontier Days in Cheyenne, Wyoming and postmarked at Rodeo Station. Features several design and color variations on the covers. Approximate size: 6.5” x 4” x 0.5” Approximate weight: 2 oz