In Woodbury Lowery's The Spanish Settlements within the Present Limits of the United States. Florida, 1562-1574 (1905 edition), there is a map with an inscription which reads, “Map of the coast of Florida, in which region is the Laguna Maymi and where the fort is to be made.” A cloverleaf drawn on the map indicates the site of a projected fort at the Bocas de Miguel Mora, an unidentified location on the southeastern coast of the peninsula. The map, as well as contemporary Spanish documents, indicates that the place called the Bocas was along the southeast coast of Florida, probably near Biscayne Bay.
Seckinger, Ron L.
"Observations on the Origin and Date of a Seventeenth-Century Florida Map,"
Florida Historical Quarterly: Vol. 43:
4, Article 8.
Available at: https://stars.library.ucf.edu/fhq/vol43/iss4/8