|
* {{cite book
| last = Bumgarner
| first = Jeffrey
| year = 2006
| title = Federal Agents: The Growth of Federal Law Enforcement in America
| publisher = Greenwood Press
| location = Westport, Connecticut
| isbn = 978-0-275-98953-8
| ref = {{sfnRef|Bumgarner}}
}}
* {{cite book
| last = Horner
| first = William T.
| year = 2010
| title = Ohio's Kingmaker: Mark Hanna, Man and Myth
| publisher = Ohio University Press
| location = Athens, Ohio
| isbn = 978-0-8214-1894-9
| ref = {{sfnRef|Horner}}
}}
* {{cite book
| last = Johns
| first = A. Wesley
| year = 1970
| title = The Man Who Shot McKinley
| location = South Brunswick, New Jersey
| publisher = A.S. Barnes
| isbn = 978-0-498-07521-6
| ref = {{sfnRef|Johns}}
}}
* {{cite book
| last = Leech
| first = Margaret
| authorlink = Margaret Leech
| year = 1959
| title = In the Days of McKinley
| publisher = Harper and Brothers
| location = New York
| oclc = 456809
| ref = {{sfnRef|Leech}}
}}
* {{cite book
| last = McElroy
| first = Richard L.
| year = 1996
| title = William McKinley and Our America: A Pictorial History|edition=softcover
| publisher = Stark County Historical Society
| location = Canton, Ohio
| isbn = 978-0-9634712-1-5
| ref = {{sfnRef|McElroy}}
}}
* {{cite book
| last = Miller
| first = Scott
| year = 2011
| title = The President and the Assassin
| publisher = Random House
| location = New York
| isbn = 978-1-4000-6752-7
| ref = {{sfnRef|Miller}}
}}
* {{cite book
| last = Morgan
| first = H. Wayne
| year = 2003
| title = William McKinley and His America |edition=revised
| publisher = The Kent State University Press
| location = Kent, Ohio
| isbn = 978-0-87338-765-1
| ref = {{sfnRef|Morgan}}
}}
* {{cite book
| last = Olcott
| first = Charles
| year = 1916
| title = William McKinley
| volume = 2
| publisher = Houghton Mifflin
| location = Boston
| url = http://books.google.com/?id=310TAAAAYAAJ&dq=the+life+of+william+mckinley+olcutt
| accessdate = March 23, 2012
| ref = {{sfnRef|Olcott}}
}}
* {{cite book
| last = Rauchway
| first = Eric
| authorlink = Eric Rauchway
| year = 2004
| title = Murdering McKinley: The Making of Theodore Roosevelt's America
| publisher = Hill and Wang
| location = New York
| isbn = 978-0-8090-1638-9
| ref = {{sfnRef|Rauchway}}
}}
| 