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1956 Map of Card Sound

Name: 1956 Topographic Map of Card Sound
Creator: U.S. Geological Survey
Published: 1983
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1983

About this map

Key Largo and its northern island neighbors emerge from the waters of Card Sound and the Atlantic Ocean in this mid-century survey, revised to show the burgeoning luxury developments of the early 1970s. The northern tip of the island is dominated by the Ocean Reef Club and the settlement of Grayvik, featuring a Landing Field and the Key Largo Club. These private enclaves are contrasted by the natural preservation surrounding Crocodile Lake and the dense mangroves at High Mangrove Point.

A network of narrow channels like Angelfish Creek and Old Rhodes Channel separate the keys, providing passage between the shallow interior sounds and the deeper ocean. To the west, a Toll Bridge provides the critical land link across Little Card Sound near Barnes Point. The map captures the specific moment when the Upper Keys transitioned from isolated tropical outposts into exclusive resort destinations while maintaining vast reaches of untamed shoreline.