The papers of Peter Gray Sears document his life and career as a southern priest at the end of the 19th century and his move to the rapidly growing city of Houston, Texas at the beginning of the 20th century. The majority of the collection is correspondence between Sears and his friends and colleagues, including Bishop Hugh Miller Thompson and Bishop George Herbert Kinsolving. There are also letters to and from family members, including his son Claudius Wistar Sears and his wife. Also included are sermons dating from the early 1900s preached in various churches in Mississippi and Texas.

The Capers Papers are concentrated in the years 1919-1945 with some earlier and later material extending the full span to 1814-1984. Included are records and artifacts created in his role as a parish priest, correspondence with family members and congregation members, materials relating to his education at the Virginia Theological Seminary, photographs, and printed materials. Rounding out the collection are biographical and visual documentation created by or gathered on family members, including some correspondence and other records of his wife, father, grandfather, and great grandfather.

The Quin Papers include over 700 sermons, a complete set of pocket diaries, scrapbooks, ledgers documenting clergy received and transferred, ordinations, and postulants in the Diocese of Texas, letters of ordination, printed material, appreciations, correspondence and other materials pertaining to Bishop Quin. Also included is a notebook belonging to Mrs. Hortense Quin from the 1946 Triennial meeting and typescript notes for addresses she wrote regarding those meetings.