Postcards from the turn of the last century till about 1945. In the early days, until about 1916, you used to be able to take a trolley to the beach. People also got there by train, excursion boats down river from Haverhill or Steamers from Boston to the pier at the Black Rocks.
The look has changed several times, due to storms and not the least of which due to large fires in 1908 and 1916.