Butler, Elmer Ellsworth, Butlers and Kinsfolk: Butlers of New England and
Nova Scotia and related families of other names, including Durkees, descendants
of Lieut. William and Sarah (Cross) Butler of Ipswich, Mass., and of Eleazer
1st and Lydia (Durkee) Butler of Ashford, Conn. and Yarmouth, N.S., Milford,
NH, Cabinet Press, 1988. Online: Ancestry.com.