(1985) Theodore Roosevelt: The making of a Modern Conservationist (U of Illinois Press.)Dorsey, Leroy G (1997), "The Frontier Myth and Teddy Roosevelt's Fight for Conservation",  in Gerster, Patrick; Cords, Nicholas (eds.), Myth America: A Historical Anthology, vol. II, St. James, NY: Brandywine Press, ISBN 1-881089-97-5.
Gould, Lewis L (2011), The Presidency of Theodore Roosevelt (2nd ed.), standard history of his domestic and foreign policy as president. online
Keller, Morton, ed. (1967), Theodore Roosevelt: A Profile (excerpts from TR and from historians).
Murphey, William (March 2013), "Theodore Roosevelt and the Bureau of Corporation: Executive-Corporate Cooperation and the Advancement of the Regulatory State", American Nineteenth Century History, 14 (1): 73–111, doi:10.1080/14664658.2013.774983, S2CID 146629376.
Redekop, Benjamin. (2015). "Embodying the Story: The Conservation Leadership of Theodore Roosevelt". Leadership (2015) DOI:10.1177/1742715014546875 online
Swanson, Ryan A (2011), "'I Never Was a Champion at Anything': Theodore Roosevelt's Complex and Contradictory Record as America's 'Sports President'", Journal of Sport History, 38 (3): 425–446, doi:10.5406/jsporthistory.38.3.425, S2CID 159307371.
Zacks, Richard (2012), Island of Vice: Theodore Roosevelt's Doomed Quest to Clean Up Sin-Loving New York.

Politics

Blum, John Morton (1954), The Republican Roosevelt, Cambridge: Harvard University Press, OCLC 310975. How TR did politics.
