1720 de Fer Map of California as an Island, 'Californie ou Nouvelle Caroline'

It is not only one of the most significant depictions of the California island theory but also its largest separate (i.e. regional) representation on a printed map. The text also provides a history of California’s exploration and subjugation up until 1695 – including the initial discovery of Baja California by Hernan Cortes – further underscoring the original author.

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