- The Library of Congress: https://www.loc.gov/

 

- The Congressional Globe: https://memory.loc.gov/ammem/amlaw/lwcglink.html

 

- The Official Records of the War of the Rebellion (courtesy of Cornell University): http://collections.library.cornell.edu/moa_new/waro.html

 

- The Freedmen and Southern Society Project (courtesy of the University of Maryland): http://www.freedmen.umd.edu/index.html

 

- The House Divided Project (courtesy of Dickinson College): http://housedivided.dickinson.edu/sites/

 

- Interactive Constitution from the National Constitution Center: https://constitutioncenter.org/interactive-constitution#

 

- The American Battlefield Trust: https://www.battlefields.org/

 

- The Pennsylvania Newspaper Archive (courtesy of Penn State University): https://panewsarchive.psu.edu/

 

- Embattled Freedom: White Abolitionists, Black Fighters of Waverly, Pa (courtesy of Jim Remsen): http://embattledfreedom.org/