Correspondence, subject files, business, personnel, biographical files and financial records. The correspondence files deal with clients: individuals, libraries, museums and book dealers. The chronological files are letters with individual clients, while the alphabetical clients files contain folders for institutional clients, and also include topical subject headings such as "Libraries""Museums", and headings for specific books and works of art. The subject files contain manuscripts, notes for seminars and lectures given by Carolyn Horton on the preservation of books and paper documents and include files on floods, particularly the 1966 flood in Florence, Italy, wet books, form letters, rubbings of books and sample paper. The business records consist of detailed worksheets arranged by client, describing condition of items bound or restored and the type of work done on these items; and complete financial records, i.e., bills, receipts, accounts and personnel records, including payroll, taxes, health insurance and other benefits, which document the operations of a bindery and paper restoration firm. The card file boxes contain details of work done arranged by artist name and by genre, i.e., music, portraits, newspapers, vellum, etc. The biographical files consist of correspondence, notebooks and newspaper clippings relating to Horton's career including her discovery that freezing wet books prevents their molding