Many different types of publications are available in the bookstore, located in the visitor center, including books specific to Wind Cave National Park and others about local natural and human history. These publications, maps, and items are available at the bookstore, by mail order, or from the association website, www.blackhillsparks.org, fax 605-745-7021, or email bhpf@blackhillsparks.org. Membership in the Black Hills Parks and Forests Association supports the organization and entitles members to a 15% discount on all purchases. The membership is $29.95 per year. For more information call 605-745-7020.