horzverti ~
I fully realize that your primary question pertained to
where your photo was taken and not
when, which has been fully established by JollyElm's amazing find. However, I just noticed a peculiarity that I thought you might be interested in seeing. Take a close look at the two pictures below, both of which are from Flickr (Library of Congress) and dated 1912. Notice how the upper sign that advertises "Venus Pencils" seems to be in two different positions in relation to the signs beneath it. I studied this for quite a while on these two pictures as well as some others, and do not think this oddity is simply the result of different camera angles, but it might be. What do you make of it? In your photo there is definitely no other sign above the fence. The only thing I can think of to explain this would be if the Venus Pencils sign was not on top of the others, but rather a seperate sign altogether and set back a distance from the fence. (I'm also including a 1912 ad for Venus Pencils that I found on eBay).
Bob
eBay Link:
http://www.ebay.com/itm/1912-VENUS-P...34259499307606