I have a few pics of Mr Boons machine. Had my grandfather here today telling me about a Mr Cutts using this at Sassafras for many years, when i'm not sure. Its a 7nhp compound on springs built in 1912. Its about 1 year older than my grandfathers single cylinder Foden. I have steered this in 2009 at Steamfest, its not to bad.
As for pics, here ya go