Nota de fuente |
Baleares seu Gymnesiae et Pityvsae insulae, dictae Maiorca, Minorca et Yvica, 1726-1750---(ac brevi descriptione auctae a R. et I. Ottens Geographis)
Tooley's dictionary of mapmakers, 1999-2004---vol. 3, p. 362 (Ottens, Josua [Joshua] [1704-1765]. Practising copper engraver, worked with Reinier, then alone. He was succeeded by his widow and son)
Atlantes Neerlandici---vol. III, p. 85 (The Ottens family - Josua 1704-1765)
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