R.U.S.I. MAPS. Vol. LXXIV (1-3). 1-3. 'Lake Ontario & River St Lawrence from the lake to Fort William Augustus' in three pieces, taken from a French draft that was on board the prise Williamson belonging to Monsr La Broquerie' almost certainly by Paul Labrosse (cf. Add. 57710, f. 2), though Add. 577...
