As of 2020, there were 3 National Lakeshores.
The National Seashore visited by Gram and Pops is listed in black.
You can see pictures of their trips by going back and clicking
on the List of Visited Parks link above and then selecting
National Lakeshores Visited by Gram and Pops.

Name
      Location
Apostle Islands National Lakeshore       Wisconsin
Pictured Rocks National Lakeshore       Michigan
Sleeping Bear Dunes National Lakeshore       Michigan