Articles:

F. M. FRYXELL

The earthquakes of 1934 and 1935 in northwestern Illinois and adjacent parts of Iowa
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 213-218. [PDF] [References]  

F. NAPIER DENISON

Further notes on certain horizontal pendulum movements
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 219-224. [PDF] [References]  

HAROLD JEFFREYS

On P up to 20° in North America
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 225-234. [PDF] [References]  

K. E. BULLEN

The problem of the earth's density variation
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 235-250. [Abstract] [PDF] [References]  

A. J. WESTLAND and ROSS R. HEINRICH

A macroseismic study of the Ohio earthquakes of March, 1937
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 251-260. [PDF] [References]  

FRANKLIN P. ULRICH

Seismological work of the Coast and Geodetic Survey during 1938 in the region adjoining the Pacific Coast of the United States
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 261-272. [PDF]  

JAMES T. WILSON

The Love waves of the South Atlantic earthquake of August 28, 1933
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 273-301. [Abstract] [PDF] [References]  

Seismological Notes
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 303-307. [PDF]  

PERRY BYERLY

Minutes of the meeting of the Seismological Society of America at Los Angeles, California, April 13, 1940
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1940 30: 308. [PDF]  

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