| ID | Historical Marker | County |
|---|
| 02.1992.1 | Home of Philo T. Farnsworth | Allen |
| 07.2023.1 | Kin Hubbard and Abe Martin | Brown |
| 20.1998.1 | Howard W. Hawks | Elkhart |
| 20.1998.2 | Ambrose G. Bierce | Elkhart |
| 20.2005.1 | Nappanee Cartoonists | Elkhart |
| 39.2004.1 | Michael C. Garber | Jefferson |
| 39.2006.1 | Irene Dunne | Jefferson |
| 49.1979.1 | [The Indianapolis Times] | Marion |
| 49.1990.1 | Macedonian Tribune | Marion |
| 49.2007.2 | Ovid Butler, Sr. | Marion |
| 49.2013.2 | Indianapolis Times | Marion |
| 49.2017.2 | German Newspapers' Demise | Marion |
| 49.2020.2 | Grace Julian Clarke, 1865-1938 | Marion |
| 49.2022.6 | Janet Flanner, 1892-1978 | Marion |
| 56.2021.1 | George Ade, 1866-1944 | Newton |
| 61.2012.1 | Julet V. Strauss | Parke |
| 64.2009.1 | Edwin Way Teale | Porter |
| 72.1992.2 | Site of Western Eagle | Scott |
| 71.1966.2 | Site of Home of Schuyler Colfax March 23, 1823 - January 1, 1885 | St. Joseph |
