This month, local author/historian Margaret Thomas Buchholz will be doing two PowerPoint presentations based on her book New Jersey Shipwrecks: 350 Years in the Graveyard of the Atlantic.

The programs will be held on Saturday, July 9 at 2 p.m. at the Barnegat branch of the Ocean County Library and at the High Point Firehouse in Harvey Cedars on Thursday, July 28 at 7:30 p.m.