History of Plate Tectonics (7.4 MB)
From Secrets in Stone for the U.S. Geological Service. A brief history of geology leading up to the discovery of plate tectonics.
From Secrets in Stone for the U.S. Geological Service. A brief history of geology leading up to the discovery of plate tectonics.
Highlights several exemplary CALFED-sponsored water projects, while explaining the goals and objectives of the CALFED water program. For CALFED Bay-Delta Program and various state resource agencies.
From Striking a Balance for the CALFED public water agency alliance. An animated sequence delineating the Bay-Delta region.
From Guardian of the Golden Gate - chronicles the 220 year history of the Presidio of San Francisco as a military post and participant in world events. For the US Army Corps of Engineers upon transference of the post to the US Park Service.