Yep, but it's McLennan, for Hugh McLennan, the author of Two Solitudes. Not to be confounded with McClelland and Stewart, the Toronto publishing house.
The Blackader-Lauterman library of fine arts is another trove because they have all sorts of old folios (Weston, Stieglitz, etc), technical books (Tissandier's, Berenice Abbott's Guide to better photo, AA's first book on making photos pre-Zone system, etc), and critical stuff of course.
I have yet to pore over Concordia's and UQAM's photo sections but it might be tasty as well.