When GM bought the Martin-Parry stamping plant in 1930 for $900,000.00 cash, prior M & P were making bodies for Ford Motor Co. as well. I always wondered if part of GM's agenda was to sort of "push Ford" out of the picture and send them scampering for a source for their truck body parts.
This is the factory GM bought in 1930 for 900K. By 1935 it was torn down and replaced though.
In 1913 this same factory was filled with water when White River flooded. Some nearby residence drowned in this flood. The plant was closed but eventually dried out and reopened.