i doubt this will be of help , but you may find it interesting nevertheless .
a german photographer came to canada before 1900 and settled in the prairies .
he had brought quite a collection of pictures with him and took many more in the prairies .
apparently the pictures (they were actually the old glass-plate style) were stored in a barn and all traces had been lost .
sometime in the 1980's someone decided to tear down the barn and actually started to throw away many of the glass plates !
someone else found out about it and alerted the musum of canadian civilization in ottawa and a "rescue mission" was started .
there are now several thousands of those images stored in the "canadian museum of contemporary photography" - really quite a stunning collection - we have seen many of them during our visits to ottawa.
unfortunately , the museum is currently closed for an indeterminate period .
hbg
here is the museum website :
http://cmcp.gallery.ca/