UNIVERSITY HOLDINGS of SAME MAP EDITION, WITH DIFFERENCES

My photographs of the 1862 Co. of Middlesex wall map, snapped on location at the map collections of McMaster University (Hamilton, ON), were made for my personal genealogy research in 2011.
At this time, the University of Toronto’s online Ontario Historical County Map Project did not yet exist. U of T’s scans are much clearer for transcribing names, and that collection is the basis for the names I personally transcribed for the HeritagePIN blog.
TREMAINES’ / MAP / OF THE / COUNTY of MIDDLESEX. / CANADA WEST. / COMPILED & DRAWN FROM ACTUAL-SURVEYS / BY THE PUBLISHERS / Geo R. & G. M. Tremaine. / 1862 / St Lawrence Buildings. / TORONTO. C.W.
On my earlier visit, McMaster University’s original Tremaine map was laid out on the large table with its fragile portions still rolled. A degraded shellac coating was now causing peeling and glare.
At a later point in time I wished to clarify some obscure parts of the U of T maps, as they were of the same publisher and date. I consulted my McMaster images and discovered some differences!
Updates had been made to McMaster’s version of the Tremaine map:
– additional labels were applied to roads and rail.
– new names had been inserted into previously blank lots.
Changes were found in the townships of Westminster, London, Ekfrid, North Dorchester and Delaware.
[UPDATE: 2025] Learn more about using the Tremaine maps for use in Genealogy: Graham Segger of the Pelham Historical Society discovered differences in various prints of the Lincoln & Welland (Niagara peninsula) maps.
County Maps as Genealogical Evidence
Tremaine County Maps (Niagara)
Recorded presentation of the above
SECTION OF WESTMINSTER TOWNSHIP EAST at the GORE CONCESSION and LAMBETH – U of T greyscale

Univ. of Toronto – Fortin, Marcel, Cheryl Woods, and Lorraine Dubreuil. “Ontario Historical County Maps.” Web Mapping Application. Ontario Historical County Maps Project, 2005- https://utoronto.maps.arcgis.com/apps/webappviewer/index.html?id=8cc6be34f6b54992b27da17467492d2f Images from the U of T project (Sec.4 image 0003.jpg or the _merge.jpg)
SAME AS ABOVE, WITH CHANGES – McMaster colour

McMaster University – Tremaine’s Map of the County of Middlesex (1862), Accession #107731 https://library.mcmaster.ca/php/raremaps.php?f=more&num=107731 Photo: ©Lisa-Ann M. Rance, 2011
SECTION OF WESTMINSTER TOWNSHIP near LONDON – CON 1 and BROKEN FRONT – U of T greyscale

Univ. of Toronto – Fortin, Marcel, Cheryl Woods, and Lorraine Dubreuil. “Ontario Historical County Maps.” Web Mapping Application. Ontario Historical County Maps Project, 2005- https://utoronto.maps.arcgis.com/apps/webappviewer/index.html?id=8cc6be34f6b54992b27da17467492d2f Images from the U of T project (Sec.4 image 0003.jpg or the _merge.jpg)
SAME AS ABOVE, WITH CHANGES – McMaster colour
(Your turn) Check out the changes south of the river.

McMaster University – Tremaine’s Map of the County of Middlesex (1862), Accession #107731 https://library.mcmaster.ca/php/raremaps.php?f=more&num=107731 Photo: ©Lisa-Ann M. Rance, 2011
Many of the updates are incorporated in the surname databases at the township pages.

The 1857 Oxford Co. (Tremaine)
at Guelph U
The 1862 Middlesex Co. (Tremaine)
at McMaster U
The 1863 Prince Edward Co. (Tremaine)
at McMaster U