2
Niecks, Frederick
| Project Gutenberg |
2012
E-Book
4
Douglass, Frederick
| Project Gutenberg |
2012
E-Book
5
Douglass, Frederick
| Project Gutenberg |
2012
E-Book
7
Damon, Frederick H.
| Damon, Frederick H. |
2017
E-Book
8
Mayer, Frederick W.
| University of Michigan Press |
2015
E-Book