For those within range of Ottawa: the National Gallery has a Frederick Evans show up until Sept 13:

http://www.gallery.ca/en/see/exhibit...k-h-evans-8753

I saw it today - it was a nice mix of his cathedral series (including the famous Wells Cathedral steps), some landscapes, self portraits and a few other things, mostly platinum prints but also some gravures and some glass small glass-plate positives mounted for back-illuminated viewing. Everything was lit well enough to get a good look.