First Order Fresnel Lens - Cape Ann Museum: An American Art Museum just north of Boston, MA

Filmmaker Rob Apse Highlights North Shore Lighthouses in New Documentary - Northshore Magazine

Fresnel lens from lighthouse - Picture of Cape Ann Museum, Gloucester - Tripadvisor

Cape Ann Museum

Lighthouse lens at Custom House returning to its RI home, Local News

FIRST ORDER LENS AND OPERATING MECHANISM, CAPE CHARLES LIGHTHOUSE - The Mariners' Museum Online Catalog

Tour The Maine Lighthouse Museum

Images from the Highland Lighthouse (Cape Code Light) in Cape Cod, Massachusetts

Cape Ann Museum

CAM Newsletters - Cape Ann Museum: An American Art Museum just north of Boston, MA