A history of farming

In the back of my wife's grandma's barn, in rural Indiana, hang these implements that tell the story of the farm's past.  I've long worked on getting just the right angle and light inside the barn to illuminate them correctly and capture these items in a way that visually describes their history and their rugged longevity.  I'm no agricultural historian, but I would guess that both the plow and the other implement, which I think is an early rock-hauling sled for removing stones from a farm field, both date back over 100 years.  This portion of the barn probably dates back to the 1930s...wooden pegs were used instead of nails to hold the timbers together.