Block Island Southeast Light  
Block Island Southeast Lighthouse's 1929 First Order Fresnel lens
Block Island Southeast Lighthouse's 1929 First Order Frensel Lens
 Courtesy of the Library of Congress and Historic American Engineering Record, National Rark Service, Lee Ann Jackson, 1988
Library of Congress, Prints & Photographs Division, HAER RI,5-NESH,1-(sheet 10 of 12)
  Block Island Southeast Light