Are you seeing any differences (land removed or added) from legacy topos?
1954
http:// legacy.lib.utexas.edu/maps/topo/virgin_islands/txu-oclc-20009999-eastern_st_thomas-1954.jpg
1982
http:// legacy.lib.utexas.edu/maps/topo/virgin_islands/txu-oclc-20009999-eastern_st_thomas-1982.jpg