Hayward, Walter Brownell. Bermuda Past and Present: A Descriptive and Historical Account of the Somer Islands. New York: Dodd, Mead & Company, 1912. Digital version at DLOC - free.
Lefroy, John Henry. Memorials of the Discovery and Early Settlement of the Bermudas or Somers Islands, 1515-1687. 2 vols. London: Longmans, Green, and Co., 1877, 1879. Digital versions at Google Books: Vol. 1 | Vol. 2 - both free.