1 volume, 68 p.
Presented by Thomas Jefferson, 1809; accessioned, 1934 (1934 70447).
These materials are also available on microfilm (Film 1467, Reel 3).
John Breck Treat's meteorological observations for 1805-1808 contain information on the temperature, barometer, rainfall, and general observations for Arkansas in the recently acquired Louisiana Territory. The observations were given to Thomas Jefferson.