Research by Rolfe C. Erickson
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- Geology of the Franciscan Complex in the Ward Creek-Cazadero Area, Sonoma County (1975) Text
- Map Cazadero 1975 (color)
- Map Cazadero 1975 (B&W)
- Poster Franciscan Granite (GSA)
- History of a metamorphosed granitoid block in a Franciscan olistostrome melange, Cazadero, California (2007)