http://www.cr.nps.gov/archeology/sites/npSites/assateague.htm
An interesting synopsis of the Legal battle over the shipwrecks La Galga and the Juno and how Spanish artifacts recovered from those wrecks wound up in NPS locations such as the Assateague Island National Seashore.
The legal battle of La Galga and Juno is important because it may set precedent for Spain's claim of the recent shipwreck and treasure recovered by Odyssey Marine. There is a difference, however, in that the La Galga and Juno were in U.S. territorial waters while the Black Swan is reported to be in international waters. Many say the Black Swan is the Merchant Royal, an English merchant ship which sank in 1641. Spain has said that if it is the Merchant Royal it was under contract to the King of Spain and therefore the treasure belongs to Spain.
At least 43 of the 390 areas comprising the National Park System contain or commemorate some aspect of Spanish heritage. Spanish shipwrecks are in or near seven areas – places like Assateague Island National Seashore in Maryland and Virginia; Biscayne National Park, Canaveral National Seashore, and Dry Tortugas National Park, all in Florida; Gulf Islands National Seashore, in Florida and Mississippi; Padre Island National Seashore in Texas; and Point Reyes National Seashore in California.