1. The National Trails System : a brief overview Author/Creator: DeSantis, Mark K., author Publication/Creation: [Washington, District of Columbia] : Congressional Research Service, [2023] Resource Type: Book Access & Availability: Loading
2. The National Trails System : a brief overview [February 20, 2020] Author/Creator: DeSantis, Mark K., author Publication/Creation: [Washington, District of Columbia] : Congressional Research Service, [2020] Resource Type: Book Access & Availability: Loading
3. The National Trails System : a brief overview [June 10, 2019] Author/Creator: DeSantis, Mark K., author Publication/Creation: [Washington, District of Columbia] : Congressional Research Service, [2019] Resource Type: Book Access & Availability: Loading