St. John Off The Beaten Track: A Photograpgically Illustrated Guide to St. John, US Virgin Islands is authored by St Johnian Gerald Singer and with a forward by the late and very popular Guy Benjamin. This handy paperback is a pretty comprehensive guide to St John beaches, snorkeling spots, hiking trails and other interesting St John attractions. Since its author is a long time St John resident (and great writer) Singer is able to describe in wonderful detail the special culture of St John as well as its rich history.
Singer writes about the mystery of Easter Rock, the history of the Cruz Bay Batter and Fort Frederiksvaern, and the history of St John dating back to the naming of the Virgin Islands by Christopher Columbus in 1493.
If you are to purchase just one book for your St John vacation, this might well be the one.