No date, printed letterhead: "Massachusetts Military and Naval History. 25 Buckingham Street, Cambridge, Mass." This was Higginson's home address, from which he apparently conducted business as the State Military and Naval Historian, a position he held for eight years. Just four words, "For Sea Island subscription", then signed - perhaps accompanying a donation to help the Sea Island, South Carolina black soldiers who had fought for Higginson in the War. Two horizontal folds, in Fine condition.