This first picture is of Grandpa's trailer and truck at another show.  The Rider Ericcson is in the back of the truck, and the Ericcson Hot Air is on the trailer along with a vertical Ellis, a vertical Goold, Shapley & Muir, a John Deere, an Aeromotor and two other engines.  The second shot and third shots are at the Milton show and are probably taken the same year.