The Old Greer County Museum is a non-profit organization. Tax deductible donations may be sent to The Old Greer County Museum & Hall of Fame Inc. P.O. Box 2 Mangum, OK 73554. Or you can bring them by 222 W. Jefferson Mangum, OK.
Museum annual memberships are available at a cost of $25 per person or $40 per household per year. Lifetime memberships may be purchased for $1000.