Noel C. Stevenson, J.D.-- Attorney and Fellow, American Society of Genealogists (President, 1985-86;  Vice President, 1983-85);  author of Genealogical Evidence: A Guide to the Standard of Proof Relating to Pedigrees, Ancestry, Heirship and Family History, Aegean Park Press; originally published 1979 and revised in 1989.  Ancestry.com calls the book "a very influential work which encouraged genealogists to weight and evaluate evidence the way juries do."