Trust, that is what I believe this photo conveys. Grandpa H is scratching the horse with one hand and holding onto his son with the other. Far Guys Dad is smiling and having a good time. The horse doesn't have a halter on or anything, obviously the horse trusts his master. This photograph was taken in 1915.
Far Guy relates another story about trust. Trust what your Grandpa and your Dad say, if there is a rule ..there just may be a reason. Far Guy and his cousin Jay were told not to run in the barn, it was a rule. Boys will be boys and they were running in the barn... one of Grandpas horses either Bess or Bob reached out and grabbed Jay by the hair. Far Guy says "We were scared to death, and never ran in the barn again." Grandpa used his horses in the 1950's to get firewood in the wintertime, he would hook up the horses to the sleigh and take them to the woods for the day. They were working horses. Apparently one of the horses had a quirk about anyone running past their stall in the barn.
Some of the old photos have been marked with ink pens, it works, but I suggest to anyone that is marking dates on photos to mark them on the back with a photo pencil. I really like the Creative Memories Photo Pencil , but I am sure that you can purchase them elsewhere. I will eventually restore this photo and remove the ink from the photograph:)