We have a full backup available of the List Serv from August 2004 through June 2017. Please visit https://gosa.org/geyser-list A full archive of the old List Serv is available from the National Parks Archive and available at the Heritage & Research Center (HRC) for more information please visit: https://www.nps.gov/yell/learn/historyculture/upload/MSC021GOSA_updated.pdf