Need Es Thermodynamics Corp Multi Boiler Contact Info?

I have a mult use Es Thermodynamis boiler that I burn wood with for heat. I have a inventory/price list of parts from 1996 with a phone number written in pen on it with a location of Sterling, M. Does anyone know if they still exist and if so do you have a phone number or website? Desperately need to order some parts to get this thing working properly again.