Source data found1. WWW VIAF, 08-02-2018 https://viaf.org/processed/BNE%7CXX1655071
2. Bibliofile
3. Derrota pa. navegar pr. encima del Gran Banco de Bahamas, 1782
4. Tooley's dictionary of mapmakers, 1999-2004 Gauld, George (1732-1782). Surveyor of the Coast of Florida