Collection search - Plan of Dalhousie Square situate in the City of Montreal made at the instance of Her Majesty's Board of Ordnance. To annex to Process Verbal of the Survey of sane made by the undersigned and bearing date 28th March 1850. John Ostell Provl Surveyor. Certified to be a true copy of the plan annexed to the original Proces Verbal which remains on record in the Office of the undersigned bearing the signatures of Henry Maurice Perrault and Patrick MacQuisten as witnesses, together with that of John Ostell Provl Surveyor. Copied by A.R. Clarke, Lt. Rl Engr March 15, 1854. [cartographic material]