Aftershocks of the 18 April earthquake were still being felt on 30 August 1906 when Alexander G. McAdie called a meeting to organize what was to become the Seismological Society of America (henceforth abbreviated SSA) (Leuchner, 1908; Byerly, 1964). Townley (1922) credits William R. Eckert, a San Francisco engineer, with suggesting to McAdie that a society be formed. Thirteen people attended (see Byerly, 1964, for a list of those present).

George Davidson was elected Chairman of the meeting and George D. Louderback Secretary. Davidson appointed a committee of nine to organize the Society. A subcommittee composed...

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