Observations at the observatory, at the Girard College, Philadelphia
made under the direction of A.D. Bache and with funds supplied by the members of the American Philosophical Society and by the Topographical Bureau of the United States, 1840 to 1845
Washington : Gales and Seaton, printers, 1847.
- Issued by Girard College, Philadelphia, Penn., Magnetic and Meteorological Observatory, 1840-45.
- "Printed by order of the Senate of the United States, and under the direction of the Topographical Bureau."
- Sabin no. 56465.