100% of the sale proceeds from two permanently reposited publications authored by Craig T. Perdue, and Craig T. Perdue and Dwight P. Wynne are earmarked for land acquisition in the Bahia Negra district in Paraguay for wildlife preservation. Three distinct biomes come together there, making it very important for wildlife on the continent. However, it is being diverted for other uses at a world record rate. Currently a small organization involved in conservation efforts there, Guyra Paraguay, is not able to offer a ready means for individuals in the United States to make donations. As a result, the funds will be delivered in person in September 2025. Purchase of either publication or a custom donation through this site will support this important initiative.