Haze Gray and Underway
Ship's history from the Dictionary of American Naval Fighting Ships.
Naval Vessel Registrar
Brief James K. Polk (SSN 645, ex-SSBN 645) fact sheet.
NavSource Online
SSBN/SSN-645 history, specifications, and images.
St. Mary's Submarine Museum
Description of the Polk display.
USS James K. Polk Alumni Association
Memorials, photos, ship's history, and reunion information.