Hi everyone! I have acquired some antique black and white photography from the 1930's. They are the work of a man named A.B. De La Vergne from Colorado. I believe he has passed away, though I can't find anything about him on the internet. The photos have gone through several art exhibits. A black and white cross-hatch screen method was used (not sure if there are gelatin silver or not). I was just wondering if anyone knew how much they would be worth (any ideas whatsoever). My Father thinks they are worth a lot, but I'm questioning it because nobody knows who the guy is. The date and quality of the work could work to its favor, but I'm not sure. Thanks guys!