This is the download from which that quote came. It's the NPS Historic Resource Guide for Ship Island, less than 50 miles to the west of Dauphin Island. Ship Island is on the maritime west end of the Mississippi Sound just as D.I. is on the east. Both islands have a similar recorded history that began at exactly the same time: Iberville's 1699 voyage from France. irmafiles.nps.gov/reference/holding/419309?accessType=DOWNLOAD