The Preston M. Bolton Collection consists primarily of materials that document his long architectural career in Houston and elsewhere, including blueprints and other drawings for the structures he designed as well as the work files containing documentation (such as client correspondence and work orders) for each project.

Additionally there are various other materials, including files related to Bolton's activities with organizations such as People To People, and miscellaneous photographs.

• “Partially processed. Might not be available to patrons. Please contact the Cushing Library’s Reading Room for more information.”