Research sources:
Ancestry.com individual family trees
US Census
WWI / WWII Draft Registration
Marriage Certificates
Birth / Death Certificates
Artifacts from the home of Adeline Killey (Stevenson)
Much of the Allen research from Pascal E. Allen
George Allen (Proposed father of John)
Mayflower ancestors [Gov William Bradford] [John Howland] [John Tilley] [Joan (Hurst) Tilley]
Wills