Home Forums Hunting & Shooting Hunter's Campfire Any of you motorcycle guys recognize these?

Here are a couple of pictures of my Grandfather and friend with their motorcycles. We haven't been able to identify them as of yet and aren't sure we will be able to from these pictures. I thought some of the guys that frequent this forum might be able to help. My Grandfather is the shorter of the men and holding the middle bike in both pictures. That would be the one we would most like to identify. We believe that the bikes were made prior to 1913. Any help is appreciated...