In 1971, Glen McLaughlin came across a strange map in a London map shop. Americæ Nova Descriptio, produced by Anne Seile (1) in 1663, showed California as a big, carrot-shaped island, floating off the coast of North America. McLaughlin, a venture capitalist in Silicon Valley, bought the map and hung it on a wall at home. It turned into a popular talking point with visitors, and California-as-an-island became McLaughlin’s decades-long obsession. Over the next 40 years, he collected more than 700 maps, charts, and other cartographic objects on the topic,…
