Friends of the Eleanor Buck Wolf Nature Center Memberships can now be purchased and renewed online. Membership allows discounts on Nature Center programs and rentals. Annual memberships are valid one year from date of purchase. The Friends of the Eleanor Buck Wolf Nature Center (EBWNC) is a not-for-profit 501-C3 corporation. Membership dues support programs and operation of the Eleanor Buck Wolf Nature Center. Over 85% of the membership dues collected are used to directly supplement the Nature Center's budget.