Directions for finding times manually.
1. History of daylight saving in Arizona: www.azlibrary.gov/links/daylight.cfm
Allen railroad action 18 November 1883. Act of Congress March 1918.
Ian R. Bartky.
The Adoption of Standard Time.
Technology and Culture, volume 30, number 1 (January 1989).
Contains a multitude of citations.
Ian R. Bartky and Elisabeth Harrison.
Standard and Daylight Saving Time.
Scientific American, volume 240, pages 46-53 (May 1979).
Code of Federal Regulations, Title 49, Part 71. Available on the Web at www.access.gpo.gov/nara/cfr/waisidx_99/49cfr71_99.html
Office of the Secretary. U.S. Dep't of Transportation.
Standard Time in the United States. A History of Standard and Daylight Saving Time in the United States and an Analysis of the Related Laws.
Washington: U. S. Gov't Printing Office, 1970.
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Last revised: 6 March 2007.