This system will be undergoing maintenance April 18th between 9:00AM and 12:00PM CDT.

U.S. Fish and Wildlife Service. North Islands: Active Coastal Processes, map, 1981; (https://digital.library.unt.edu/ark:/67531/metadc66928/m1/1/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .