Scope and Contents From the Collection: The collection consists of several narratives written by David Dexter Clarke. One is a journal of his 1864 trip from Amherst, Massachusetts, to San Francisco, California, crossing the Isthmus of Panama on the way. Another is a history of the development of the water supply system for Portland, Oregon. The longest narrative is a memoir of his professional life, including descriptions of many of the other engineers he worked with.Also in the collection is a biographical narrative...