ferries underpin the area.
Dated but essential. Updating requires only a visit on the internet and a look with Google Earth
http://www.amazon.com/Sierra-Natural-Florida-Guides-United/dp/087156551X
20 years ago free access..today a fence ? Too many Jeeps.
This is a kayak book. A map book. But if bicycling the Overseas Hyway, a kayak tour over white sandbars outback in ‘wilderness’ is essential. Looking thru the Burnham book, the cyclists gains an understanding of where he will or is. Library ILL.
http://www.amazon.com/Florida-Keys-Paddling-Atlas/dp/076273857X/ref=sr_1_1?s=books&ie=UTF8&qid=1387842173&sr=1-1&keywords=burnham+keys