1To James Madison from Andrew Ellicott, 12 April 1811 (Madison Papers)
The zenith Sector which I used on the southern boundary of the United States, is principally...
2To James Madison from Simon Snyder, 12 April 1811 (Abstract) (Madison Papers)
12 April 1811, Lancaster. Transmits “an exemplified copy of an Act of the General Assembly of the...