The collection, which is housed in two boxes, is arranged in the following manner: first three authors are arranged by number of letters in the collection (Guglielmo Marconi, R. Norman Vyvyan and Annie Jameson Marconi, in that order), and the rest...
Big Creek projects & Colorado River Survey [Colorado River Survey (1922 - with captions)- Hall's Crossing, Rock Island, Hole in the Wall, San Juan River, San Juan dam site, Aztec Creek, Rainbow Natural Bridge, Girand dam site, Sentinel Rock dam...
Administrative Series contains records relating to various facilitative operations within the Alamitos Land Company, including, but not limit to, account books, annual reports, appraisals, articles of incorporation, audits, balance sheets, bylaws,...
Kern River near Kernville - showing intake of Pacific Electric Light & Power Co. [for Borel PH], gauging bridge at PEL&P powerhouse site, Edison Electric Co.'s site for power plant #1 [Kern River #1] intake of PD Co. on left, penstock site for...
Construction site of the Snow telescope building, Mount Wilson Observatory, as seen from platform in tree to the northeast. The site is in a clearing, surrounded by trees and shrubs. Several unidentified construction workers stand in the area....
Construction site of the 100-inch telescope building, Mount Wilson Observatory, as seen from the 150-foot tower telescope. The wooden form for the concrete pier is under construction. Trees surround the construction site; the San Gabriel Mountains...
Future site of the new Monastery Annex, Mount Wilson Observatory. The Monastery served as a dormitory for visiting scientists. The site for the new building is seen at the top of the staircase seen in the center of this photograph. Two ends of the...
Building site for the Hooker reflecting telescope, Mount Wilson Observatory. Installation of the concrete footings for the building. Photographed from the 150-foot tower telescope. A few construction workers are visible on the work site, as well...
Building site of the 100- inch telescope observatory dome, site as seen from the 150-foot tower telescope; construction on wooden mold for pier, Mount Wilson Observatory. An outbuilding is barely visible behind the trees in the surrounding area....