There are several ways to find a photographer by their photographs online. Google image search is very good. Just type in a photograph name or description and the photographers name. A lot of...
Try www.ancestry.com or www.rootsweb.com
Try www.deadfred.com, search the surname on eBay. USGenWeb has a photo archive project currently.The best way to locate photos is to write to family...
I believe that you are confusing the term "historical monument" with the description "historical PLACE." Generally, properties eligible for listing in the National Register of Histoircal Places are...