To document the activities of the visiting and staff scientists and other work supported by the Institute, this formal series, called "Lunar and Planetary
Institute Contributions," was initiated in September 1969 while the Institute was under the auspices of the National Academy of Sciences. Two additional series,
Basaltic Volcanism and the Terrestrial Planets (BV) and the Technical Reports (TR) series, were active between 1977 and 1998. Both the BV and the TR series
have been included on this site for a more complete view of Institute-related work. The Lunar and Planetary Institute Contribution series continues today,
documenting the scientific research, meeting-related publications, educational materials, outreach products, and other activities of the Institute. The LPI is
operated by USRA under a cooperative agreement with the Science Mission Directorate of the National Aeronautics and Space Administration.