Antique Camper Wood Where To Get An Antique Toilet Tank?

Where to get an antique toilet tank? - antique camper wood

Lost due to the structural changes that we have a cistern antiwue last fall. It was built in 1924 and has been in our summer camp family. Pictures here: http://digirom.potsdam.edu/toilet/

Where can I find a vintage / reserve tank of origin? Alternatively, you can make a fake "fair" to?