The C-SPAN Archives records, indexes, and archives all C-SPAN programming for historical, educational, research, and archival uses. Every C-SPAN program aired since 1987, now totaling over 160,000 hours, is contained in the C-SPAN Archives and immediately accessible through the database and electronic archival systems developed and maintained by the C-SPAN Archives.The Archives records all three C-SPAN networks seven days a week, twenty-four hours a day. Programs are extensively indexed making the database of C-SPAN programming an unparalleled chronological resource. Programs are indexed by subject, speaker names, titles, affiliations, sponsors, committees, categories, formats, policy groups, keywords, and location. The congressional sessions and committee hearings are indexed by person with full-text. The video collection can be searched through the online Video Library.All C-SPAN programs since 1993 are digital and can be viewed online for free. Duplicate copies of programs that have aired since 1987 can be obtained and used for education, research, review or home viewing purposes. Proceeds from the sale of these programs help support the operation of the Archives. Some programs are not copyright cleared for sale.The Archives began within the Purdue University School of Liberal Arts in 1987. In July 1998, C-SPAN assumed responsibility for the archival operations and the facilities were moved from the Purdue University campus to the Purdue Research Park in West Lafayette, Indiana. The indexing, abstracting, and cataloging of C-SPAN programs is the responsibility of the C-SPAN Archives staff.