Early divided back postcard of streetcars at the Public Garden Incline, postmarked 1910. At left is a car bound for Watertown via North Beacon Street; at right is a car from Union Square.
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Scanned postcard from eBay auction: "<a rel="nofollow" class="external text" href="https://www.ebay.com/itm/BOSTON-MA-Public-Garden-Subway-Entrance-1910/224067562815">BOSTON MA – Public Garden Subway Entrance - 1910</a>"