I stopped by a old farmhouse garage sale in Cleveland TN. about a year ago. and discovered a few visible pumps off in the distance, by the barn. After some pleading, the farmer refused to sell the pumps to me, but he did sell the signage on the pumps. I was able to find out a few things about the signs. They were made by Standard Oil between 1917 and 1922. It's basically a "do not" do list for Standard Oil Employees.