Bulletins. Cover a wide range of geologic investigation.

Monographs. Comprehensive and exhaustive treatises on geologic subjects.

Official gazette of the Patent Office.

Official postal guide.

Private publication, authorized by Post Office Department. Albany, N. Y., J. B. Lyon Co., $3.50 per year.

Congressional directory.

For the current session of Congress. Several editions embodying changes and corrections are issued during each session of Congress.

General biographical directory of Congress, 1774-1911.

Official register of the United States.

The list of American and English genealogies in the Library of Congress, 1910; also, Heads of families, 1790, in the thirteen original states.