Hilton Head Island's history "before the bridge" will be the topic of a presentation by Natalie Hefter, vice president of the Coastal Discovery Museum, at 1:30 p.m. Tuesday at the Heritage Library. The library is on the second floor of the Savannah Bank Building at 852 William Hilton Parkway. This is the fourth in a series of lectures describing the history of Hilton Head Island presented by the Heritage Library. The lecture fee is $8 for library members and $10 for nonmembers. Discounts for couples are available. Information: 686-6560.