- 18** : Letter from George H. and J. S. Keerl, [18--]
- 1820 : Account with George H. Keerl and J. S. Keerl, June 7, 1820
- 1823 : Letter from George H. Keerl and J. S. Keerl, February 8, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, March 20, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, May 1, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, May 9, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, May 15, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, May 21, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, June 4, 1823
- 1823 : Letter from George P. French, July 12, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, July 16, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, July 22, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, August 5, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, August 29, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, September 22, 1823
- 1823 : Account with George H. Keerl and J. S. Keerl, October 1, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, October 21, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, December 13, 1823
- 1823 : Letter from George H. Keerl and J. S. Keerl, December 19, 1823
- 1824 : Letter from B. W. Bramham, March 4, 1824
- 1824 : Letter from George H. Keerl and J. S. Keerl, March 8, 1824
- 1824 : Letter from George H. Keerl and J. S. Keerl, April 15, 1824
- 1824 : Letter from George H. Keerl and J. S. Keerl, May 11, 1824
- 1824 : Letter from George H. Keerl and J. S. Keerl, May 27, 1824
- 1824 : Letter from George H. Keerl and J. S. Keerl, June 9, 1824
- 1824 : Letter from George H. Keerl and J. S. Keerl, September 30, 1824
- 1824 : Letter from George H. Keerl and J. S. Keerl, October 24, 1824
- 1825 : Letter from George H. Keerl and J. S. Keerl, February 3, 1825
- 1825 : Letter from George H. Keerl and J. S. Keerl, April 8, 1825
- 1826 : Account with George H. Keerl and J. S. Keerl, August 8, 1826
- 1827 : Letter from George H. Keerl and J. S. Keerl, February 13, 1827
- 1827 : Letter from George H. Keerl and J. S. Keerl, June 7, 1827
- 1827 : Letter from George H. Keerl and J. S. Keerl, June 9, 1827
- 1828 : Letter from George H. Keerl and J. S. Keerl, January 19, 1829