Nice Canadian dues, Dianne! Thanks for posting them. I am looking for those on cover.

Here is a 1940 cover from Georgetown, British Guiana to The General Musicians Supply
Co. of New York. It was assessed 4c postage due. It's a nice cover but a little dirty.
I'm thinking of trying to erase the grubby fingerprints on it.

I really like the map, it even includes latitude and longitude.
