The twentieth century biographical dictionary of notable Americans/

समान संसाधन

• Who's was who in American history-arts and letters: letters a component of Who's who in american history /
  प्रकाशित: (1975)
• The International who's who 1956-57 /
  प्रकाशित: (1992)
• Chambers biographical dictionary /
  प्रकाशित: (1995)
• A biographical dictionary of scientists
  प्रकाशित: (1982)
• The Entrepreneur magazine: encyclopedia of entrepreneurs/
  द्वारा: Hallett, Anthony, 1966-
  प्रकाशित: (1997)