By His Excellency Francis Bernard, Esq ; captain-general and governor in chief, in and over His Majesty's province of Massachusetts-Bay ... A proclamation for a day of public thanksgiving : ... Thursday the twenty-fourth day of this instant July ... Given at the Council-chamber in Boston, the fourth day of July, 1766 . (Printed by Richard Draper, printer to his excellency the governour, and the honourable His Majesty's Council, 1766)