1. Public Law 93–296, 93rd Congress, S. 775, May 31, 1974.
2. U. S., Congress, Senate, Special Committee on Aging, Developments in Aging: 1976, Part 1, 95th Congress, 1st session, April 7 1976, pp. 2–4
3. Robert N. Butler, Why Survive? Being Old in America ( New York: Harper and Row, 1976 ), pp. 26–27.
4. Developments in Aging: 1976, op. cit., pp. 4–5.
5. U. S., Bureau of the Census, Demographic Aspects of Aging and the Older Population in the United States, Current Population Reports, Special Studies, Series P-23, No. 59, p. 9.