Hi I’ve been searching for a site like this for a long time. I’ve just purchased two stationary steam engines. Both are single cylinder, a vertical marine the othera horizontal mill engine, there are no identification marks at all. But today whilst surfing the net I found an identical Mill engine identified as designed by R W Dunn and castings made by A J Avery in the early1900's. Can any body help with any information on Messer’s Dunn and Avery? Both engines are well designed.