Historical mapping
 

Does anyone know if there is a card for GPS that has historical maps on it? We would like to get some older maps to locate reefs with while fishing. I have a Lowrance and my brother has a Garmin.

that is a tough ask. There is no real map that displays historical info. I ended up having to make my own and create the old coastline, for example.

best way is to use google earths time feature. but that doesn't help when you are on the boat wanting to look for something.

Download google earth pro.
On the top tool bar there is a button that looks like a clock. It allows you to view older images. Place a pin on the old islands and where the points used to be. Download into a KML file and use the lowrance software to convert to the lowrance format. Place on a SIMS card and up load to your GPS.
Several youtube videos out there will walk you through the process.