Flickr/ Gage Skidmore Author and historian Brian Doherty was found dead last Friday at a park in California’s Bay Area after attending an event the night prior. The 57-year-old, a senior editor at Reason Foundation, is believed to have fallen on Thursday while attending an art event featuring the Battery Yates military defense structures, according to SFGate . Doherty had experienced health issues in recent years that limited his mobility and required the use of a cane—factors the Reason Foundation suggested may have contributed to the fall. Doherty was best known for his 2008 book, Radicals for Capitalism , which chronicled the rise of the modern American libertarian movement. In a statement, Reason Foundation President David Nott praised Doherty’s wide-ranging influence, describing him as “ the historian of the libertarian movement.” Friends and colleagues also paid tribute. Author and best friend Chicken John Rinaldi described Doherty’s death as a significant loss, telling the outlet his death leaves “so many people and so many systems impoverished.” Read it at New York Post Read more at The Daily Beast.