John Earl Naugle devoted many years to aerospace research and administration. He began his career by studying cosmic rays, using nuclear emulsions exposed during high altitude balloon flights. Later, the same emulsions were carried on sounding rockets. In 1959, Mr. Naugle joined the Goddard Space Flight Center, where he continued to use sounding rockets to study the protons in the magnetosphere. In 1960, he took charge of the Fields and Particles Program at NASA Headquarters, where he remained until his retirement in 1981. During his years at NASA Headquarters. Mr Naugle served as a principal investigator, director of the Physics and Astronomy Program, associate administrator for the Office of Space Science, associate administrator, of the agency, and finally as chief scientist. Mr. Naugle is now enjoying his retirement on Cape Cod, where he continues to write about the early history of space science.