| John Muir in historical perspective SM Miller, J Muir | 27 | 1999 |
| The Environmental Justice: William O.Douglas and American Conservation AM Sowards Douglas and American, 2009 | 18* | 2009 |
| The past and future of the Columbia River P Hirt, AM Sowards The Columbia River Treaty revisited: Transboundary river governance in the …, 2012 | 17 | 2012 |
| United States west coast: An environmental history A Sowards Bloomsbury Publishing USA, 2007 | 15 | 2007 |
| Spiritual egalitarianism: John Muir’s religious environmentalism AM Sowards na, 1999 | 11 | 1999 |
| William O. Douglas s Wilderness Politics: Public Protest and Committees of Correspondence in the Pacific Northwest AM Sowards Western Historical Quarterly 37 (1), 21-42, 2006 | 7 | 2006 |
| Idaho’s place: A new history of the Gem State AM Sowards University of Washington Press, 2014 | 6 | 2014 |
| Public Lands and Their Administration AM Sowards http://americanhistory.oxfordre.com/view/10.1093/acrefore/9780199329175.001 …, 2017 | 5 | 2017 |
| Administrative Trials, Environmental Consequences, and the Use of History in Arizona's Tonto National Forest, 1926–1996 AM Sowards Western Historical Quarterly 31 (2), 189-214, 2000 | 4 | 2000 |
| Reclamation, Ranching, and Reservation: Environmental, Cultural, and Governmental Rivalries in Transitional Arizona AM Sowards Journal of the Southwest, 333-361, 1998 | 4 | 1998 |
| Making America's Public Lands: The Contested History of Conservation on Federal Lands AM Sowards | 2 | 2022 |
| An Open Pit Visible from the Moon: The Wilderness Act and the Fight to Protect Miners Ridge and the Public Interest AM Sowards University of Oklahoma Press, 2020 | 2 | 2020 |
| Rexford F. Daubenmire and the Ecology of Place: Applied Ecology in the Mid-Twentieth-Century American West AM Sowards New perspectives on the history of life sciences and agriculture, 297-322, 2015 | 2 | 2015 |
| " We're All Kinda Crazy": Smokejumpers and Western Forests AM Sowards Oral History Forum d'histoire orale 30, 2010 | 2 | 2010 |
| Instituting water research: the Water Resources Research Act (1964) and the Idaho Water Resources Research Institute AM Sowards, BM Lacabanne Water History 9 (3), 295-316, 2017 | 1 | 2017 |
| Sometimes, It Takes a Table AM Sowards Environmental History, 2017 | 1 | 2017 |
| Claiming Spaces for Science: Scientific Exploration and the Canadian Arctic Expedition (1913-18) AM Sowards Historical Studies in the Natural Sciences 47 (2), 164-99, 2017 | 1 | 2017 |
| The Varieties of Urban Experience: A Study in Urban Nature AM Sowards Journal of Urban History 39 (5), 1012-1022, 2013 | 1 | 2013 |
| Modern Ahabs in Texas William O. Douglas and Lone Star Conservation. AM Sowards Journal of the West 44 (4), 2005 | 1 | 2005 |
| Confronting Kennecott in the Cascades AM Sowards The Nature of Hope: Grassroots Organizing, Environmental Justice, and …, 2018 | | 2018 |
