Version history for: Sherrod, David R., and Smith, James G., 2000, Geologic map of upper Eocene to Holocene volcanic and related rocks of the Cascade Range, Oregon: Geologic Investigations Series Map I-2569, 2 sheets, scale 1:500,000 Version 1.0 June 21, 2004 Released online at http://pubs.usgs.gov/imap/i-2569/ 2000 Initial release in paper form