Changes

* Jensen, Richard. "Democracy, Republicanism and Efficiency:  The Values of American Politics, 1885-1930," in Byron Shafer and Anthony Badger, eds, ''Contesting Democracy: Substance and Structure in American Political History, 1775-2000'' (U of Kansas Press, 2001) pp 149-180; [http://www.uic.edu/~rjensen/rj0025.htm online version]  

* Jensen, Richard. "Democracy, Republicanism and Efficiency:  The Values of American Politics, 1885-1930," in Byron Shafer and Anthony Badger, eds, ''Contesting Democracy: Substance and Structure in American Political History, 1775-2000'' (U of Kansas Press, 2001) pp 149-180; [http://www.uic.edu/~rjensen/rj0025.htm online version]  

* Mowry, George E. ''Theodore Roosevelt and the Progressive Movement'' (1946), the standard history

* Mowry, George E. ''Theodore Roosevelt and the Progressive Movement'' (1946), the standard history

*[http://serv.ul.cs.cmu.edu/zoom/record.html?id=15584 Mowry, George. ''The Era of Theodore Roosevelt and the Birth of Modern America, 1900-1912.'' (1954) general survey of era; online]

*Mowry, George. ''The Era of Theodore Roosevelt and the Birth of Modern America, 1900-1912.'' (1954) general survey of era

===Primary sources===

===Primary sources===

* Croly, Herbert David. ''Progressive Democracy'' (1914), theory [http://books.google.com/books?id=7QAAlVuOcOMC&pg=PA358&dq=intitle:progressive+date:1910-1916&num=30&as_brr=1#PPP15,M1 full text online]  

* Croly, Herbert David. ''Progressive Democracy'' (1914), theory [http://books.google.com/books?id=7QAAlVuOcOMC&pg=PA358&dq=intitle:progressive+date:1910-1916&num=30&as_brr=1#PPP15,M1 full text online]