Paul Doughty Bartlett was a physical-organic chemist who was well known for his insights into the mechanics of organic reactions. Dr. Bartlett retired from Harvard University in 1975 after more than 40 years on the faculty, but would later continue his work for another 10 years at Texas Christian University. This collection covers the research conducted by Bartlett at TCU, which primarily dealt with free radicals and reaction mechanisms. Spanning over 20 linear feet, the collection is comprised primarily of a large correspondence file and a series of student notebooks. A small portion of the collection has been digitized.