Scope and Contents

Draft of article published as "Early engineering center in California" in California Historical Society Quarterly, v. 29, no. 3 (September 1950). Includes copy prints of photographs by Carleton E. Watkins.

Scope and Contents

Includes copy prints of photographs by Carleton E. Watkins.

Series Scope and Contents From the Series:

The series consists of research files and notes compiled by Johnson for his study of the history of hydraulic engineering and hydraulic mining in California.

Scope and Contents

Published in California Engineer (May 1949). Includes images by Carleton E. Watkins.

Scope and Contents

Reprint. Originally published in California Historical Society Quarterly, v. 29, no. 3 (September 1950). Includes images by Carleton E. Watkins.

Scope and Contents

Manuscript of article published in Journal of the Hydraulics Division (American Society of Civil Engineers), v. 86, no. HY4 (April 1960).

Scope and Contents

Published in Shore and Beach, v. 29, no. 1 (April 1961). Includes images by Carleton E. Watkins and Eugene Compton.

Scope and Contents

Includes copy prints of photographs by Carleton E. Watkins and David Pirtz.

Scope and Contents Typescript copy of holograph account of a trip to the quicksilver mines of Napa and Lake counties taken by J. R. Smedbergin 1879. In addition to describing some of the early mines, Smedberg describes what he considers to be the first Knox furnace built for the reduction of quicksilver in California. Includes letter from J. W. Johnson to the California Historical Society, dated 20 July 1946, describing the report and photographic copies of portions of the original. Note: Original housed in...

Scope and Contents

Includes file of correspondence between J. W. Johnson and L. K. Jordan, Manager, North Fork Ditch Co., Sacramento, 1949-1950.