Dawn - Great work in finding the pictures. Sherlock Holmes would be proud!
I have been working on the illustration with PS to see if there is something that was reworked into it. I have changed the hues, saturation, colors and as of yet no eureka moments. They were definitely taken from the photos and reworked as an illustration.
I am of the opinion that the object on the right is for attaching the axle suspension spring assembly to a frame on a large vehicle.
“When a man sits with a pretty girl for an hour, it seems like a minute. But let him sit on a hot stove for a minute - and it’s longer than any hour. That’s relativity.” –Albert Einstein