"topographical map of the yosemite valley and vicinity", part of east central california. Mountain drawing by j. E. Weyss; lettering by j. Franke. Julius bien & co. Photo. Lith. Expeditions of 1878-79, under the command of capt. Geo. M. Wheeler, corps of engineers, u. S. Army. U. S. Geographical surveys west of the 100th meridian. Author: wheeler, 1883. This first detailed survey of yosemite valley shows interesting cultural features in the valley, many of which no longer exist. The steep valley cliffs are shown with a map style of the 19th century called hachuring - closely spaced lines to indicate slope. It was published separately and as part of the topographical atlas. West of the 100th meridian of longitude also known as the wheeler survey, one of the most important of the u. S. Army survey's of the american west in the late 19th century. Date: 1883.
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