Caltech Historical Seismograms - Microfilmed Collection
The extensive primary record of Caltech’s seismological research from its beginnings in the 1920s through 1962 has been documented in detail and microfilmed. These were microfilmed during the early 1980s with funding from the USGS and NOAA.
In addition to the Pasadena station, there were also auxiliary stations located at Mt. Wilson, Riverside, Santa Barbara, La Holla, Tinemaha, and Haiwee. All stations have been microfilmed.
This collection of microfilms is available in the Sherman Fairchild Library. Please contact us for access information.