I recently acquired an old Liberty Bell wood stove from a friend. Its an insert model 7901. I have a picture of the back of the unit. Little did I know that in MA i need to have a permit to put the stove in my fireplace in order to be covered by insurance. I can't find the manual for the unit as I need it to make sure the specs of the stove are intact in order to get the permit. I am lost here, I have searched all over the internet and can't seem to find one. I know the stamp on the back says Liberty Bell, Metal Design MFG., West Hartford CT, any suggestions to help broaden my search would be greatly appreciated. Thanks in advance.