Ignatius "Nash" Castro (1920) received the Pugsley Medal on two occasions. The first medal was awarded in 1969 for his contribution to the National Capital Parks system in Washington D.C. After 30 years with NPS, Castro retired from NPS and commenced a second career of 21 years as executive director, Palisades Interstate Park Commission and was again awarded the Pugsley Medal in 1979 " for his impletion and espansion of the Commission's program of conservation, historic preservation and environmental education with consequent enhancement of the valve of its parks and historic sites for recreational and cultural purposes for the benefit of the public".
Castro was a native of Arizona but he attended George Washington University in Washington D.C and was a naval aviator in World War II. His 30 year association with the NPS began at grand canyon National Park in Arizona in 1939. He then served at Hawaii National Park as assistant superintendent. Following this, Castro arrived at the Midwest Regional Office in Omaha whic was resposible for overseeing such parks as Yellowstone, Glacier, Grand Teton, Rocky Mountain, Mount Rushmore and Badland National Monuments.
Lady Bird Johnson called him "indispensible" for his work in beautifying Washington D.C.