Early undivided back postcard of Boylston station, facing south
Unknown author<span style="display: none;">Unknown author</span>
Scanned postcard from eBay auction: "<a rel="nofollow" class="external text" href="https://www.ebay.com/itm/Boston-Massachusetts-Park-Street-Subway-Tracks-Undivided-Back-Printed-Germany/153488967034">Boston Massachusetts Park Street Subway Tracks Undivided Back Printed Germany</a>"