Shows Fort Saint-Jean on the Richlieu River, as it was between 1748 and 1760.
The map is inset with an elevation of the fort at lower left, the title and scale bar (in toises) at lower right, and a bird's-eye view of each of the floors of the bastion at upper right - these bird's-eye views are presented as flaps that lift to reveal the floor beneath; the roof forms the uppermost flap with each of the subsequent floors to follow.
Copy at Add Ms 57,712.16. Bound in R.U.S.I. Vol LXXVII. Shows manuscript addition of "16" in pencil at upper right. Manuscript addition of "A 66" in pencil at lower right. Laid on archival tissue. Green circular label to verso shows "20". White label to verso shows "DRAWER 30 SECTION 1". Blue label to verso shows "A 30/44". Manuscript annotation in ink to verso shows "Fort S.t Jean". Evidence of old folds.