The USGS Albuquerque Seismological Laboratory is trying to generate interest and funding for scanning a portion of the complete set of WWSSN film chips under its control. You can go to http://astwww.cr.usgs.gov/Local/FitmScans/ for more details and several examples of some images scanned from WWSSN film chips.

The World Wide Standardized Seismograph Network (WWSSN) operated from 1961 through 1996. Thus the WWSSN produced high-quality analog recordings of a very large number of interesting seismic events before and during the advent of the digital age. They were a primary source of phase time, period, and amplitude measurements used by the U.S. National...

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