There are five extant complete issues of The Unionist in three storied archives, as listed below:

1. August 8, 1833, Issue 2 – New-York Historical Society Library
2. September 5, 1833, Issue 6 – American Antiquarian Society
3. December 9, 1833, Issue 20 – Library of Congress
4. March 13, 1834, Issue 32 – New-York Historical Society Library
5. April 10, 1834, Issue 36 – Library of Congress