Ari Kelman is the McCabe Greer Professor of History at Penn State University, where he studies the U.S. Civil War, Western, Native American, and environmental history. Kelman's book, A Misplaced Massacre, won the 2014 Bancroft Prize, Avery O. Craven Award, Tom Watson Brown Book Award, and Robert M. Utley Prize.    
Kelman first book, A River and Its City (University of California Press, 2003; paperback 2006), is an environmental history of the city of New Orleans, especially focusing on the city's uneasy relationship with the Mississippi River. A River and Its City won the 2004 Abbott Lowell Cummings Prize, awarded annually "to the publication that has made the most significant contribution to the study of vernacular architecture and cultural landscapes of North America."
His most recent book explores the struggles over how the notorious Sand Creek massacre of 1864 should be remembered, beginning in the immediate aftermath of the violence and continuing through the opening of the Sand Creek Massacre National Historic Site. Through archival research and oral history interviews, A Misplaced Massacre (Harvard University Press, 2013) documents how National Park Service employees, local landowners, and descendants of victims of the Sand Creek massacre worked together to develop an appropriate memorial for the historic site. A Misplaced Massacre has been reviewed extensively.
During and after Hurricane Katrina, Kelman wrote articles describing New Orleans' environmental history for such popular media outlets as The Nation, Slate, and The Christian Science Monitor. From 2005-2007, Kelman was senior creative consultant for the PBS series, American Experience: New Orleans. He is a regular contributor to the Times Literary Supplement. Kelman also co-founded the award-winning blog The Edge of the American West.
- Abbott Lowell Cummings Prize Winners http://www.vernaculararchitectureforum.org/awards/cummings-winners.html
- "150 years later, Sand Creek still wounds," Denver Post http://www.denverpost.com/opinion/ci_22843885/150-years-later-sand-creek-still-wounds
- "Screams in the Wind," Mark Gidley, Times Literary Supplement. May 10, 2013.
- The Nation http://www.thenation.com/authors/ari-kelman#axzz2Xpb86YlM
- Slate http://www.slate.com/search.html?q=ari+kelman
- Christian Science Monitor http://www.csmonitor.com/2005/0912/p09s01-cogn.html
- Times Literary Supplement http://www.the-tls.co.uk/tls/public/tlssearch.do?querystring=ari+kelman&x=32&y=10§ionId=1797&p=tls
- "The Edge of the American West to Cliopatria's Hall of Fame," History News Network http://hnn.us/node/140207
UC Davis website 
Personal website 
Sand Creek Massacre National Historic Site http://www.nps.gov/sand/index.htm