Here is a beautiful postcard showing the view from The Headlands — the granite dome on the southeast side of the mouth of Rockport harbor — looking northwest across Sandy Bay towards Pigeon Cove.
This postcard was printed by The Robbins Bros. Co, Boston, and distributed through the Metropolitan News Company, a larger Boston postcard publisher. Robbins was in business only from 1907 to 1912, so a fair estimate is that the image is from around 1910.