Since 1982, Primary Source Media, a division of Gale, has published the Declassified Documents Reference System (DDRS). This unique reference product involves indexing, abstracting, and capturing a large selection of U.S. government documents obtained from presidential libraries. These libraries receive declassified documents from various government agencies, including the White House, the CIA, the FBI, the State Department, and others. As researchers visit these presidential libraries and request documents, the libraries photocopy and provide them to Gale. The result is a collection of more than 75,000 documents, consisting of more than 465,000 pages, that has literally been built by researchers themselves for nearly two decades.