Swann Auction Galleries said: "Rarely, if ever, has a piece of an 18th Century map's publication story been preserved or offered for sale." A specialist assessed the map to be about 75% complete.

Welshman's 18th Century US map for sale. Published. 6 June 2019. App and map marks city's Jewish history. Published. 17 March 2019. The man who put Wales on the map. Published. 20 August 2018.

Swann Auction Galleries said: "Rarely, if ever, has a piece of an 18th Century map's publication story been preserved or offered for sale." A specialist assessed the map to be about 75% complete.

Welshman's 18th Century US map fetches $125k in New York. 8 June 2019. ... Swann Auction Galleries said it was "rarely, if ever" that such an 18th Century item had been preserved.