Bulletin of the Geological Society of America.
- [New York] : [Geological Society of America], 1890-1960.
- illustrations ;
- Monthly, 1935-1960
- Irregular, 1890-<1891> Quarterly, 1890-1932 Bimonthly, 1933-1934
Title from caption.
Vols. for 1890-<1891> have no numbering, but constitute v. 1, no. 1-
Vols. 1-44 include Proceedings of the annual meeting, 1889-1933, later published separately.