| Published Sources for
the above Quotations: |
| F: |
"In "The New York Public Library Book of 20th Century American Quotations," by Stephen Donadio, 1992." |
| R: |
"In "The Speaker's Electronic Reference Collection," AApex Software, 1994." |
| A: |
"In "Isaac Asimov's Book of Science and Nature Quotations," ed. Jason Shulman & Isaac Asimov, 1988." |
| N: |
"In "Quotations of Wit and Wisdom," ed. & John W. Garder et al., 1975." |
| K: |
"On administering the experimental vaccine for polio to himself and his wife and three sons, news summaries 9 May 1955." |
|