Dan Sullivan has published two good documents from 1869, which promote public debt-free and commodity-free legal tender from a Libertarian and Georgist perspective.
“Finance And Currency,” Congressman Benjamin F. Butler, Massachusetts, Address to the United States House of Representatives, Tuesday, January 12, 1869.
http://savingcommunities.org/docs/butlerbenjaminf/finance.html
“Thirty Years of Labor,” Terence Powderly, Chapter 9: The Circulating Medium.http://savingcommunities.org/docs/powderly.terence/30years09.html