This image is available from the <a href="https://en.wikipedia.org/wiki/Toronto_Public_Library" class="extiw" title="en:Toronto Public Library">Toronto Public Library</a> under the reference number <b>T1823-2/4Msm</b>
<bdi><a href="https://en.wikipedia.org/wiki/en:Elias_Walker_Durnford" class="extiw" title="w:en:Elias Walker Durnford"><span title="British Army general">Elias Walker Durnford</span></a>
</bdi>
1823-09-24
<a rel="nofollow" class="external free" href="http://oldtorontomaps.blogspot.com/2013/01/1816-nicolls-plan-of-fort-at-york-upper.html">http://oldtorontomaps.blogspot.com/2013/01/1816-nicolls-plan-of-fort-at-york-upper.html</a>