Here is an unpaved Marmion Way in Rockport, circa 1910, as seen in a real photo postcard (meaning it was printed directly from a photo negative). The view is from just past Gully Point, looking southwest up Marmion towards South Street.
The house in the background on the right side is, I believe, the house that currently stands at 27 Marmion Way. Its Zillow listing says it was built in 1870. Just past that, out of view here, would be Old Garden Road. The other houses to the right in this picture are no longer standing.
The reverse side includes markings from the manufacturer of the real photo postcard backing that indicates it is from somewhere between 1907 and 1914, so I’ll call it 1910.