High Quality Content by WIKIPEDIA articles! Albert Hale Slyvester (aka Albert H. Sylvester, Hal Sylvester and A.H. Sylvester) (1871 – September 14, 1944) was a pioneer surveyor, explorer, and forest supervisor in the Cascade Range of the U.S. state of Washington. He was a topographer for the United States Geological Survey (USGS) in the Snoqualmie Ranger District between 1897 and 1907. Then, from 1908 to 1931, he served the United States Forest Service as the first forest supervisor of Wenatchee National Forest. His work involved the first detailed surveying and mapping of large portions of the Cascade Range in Washington, over the course of which he gave names to over 1,000 natural features. The surveying work often required placing cairns and other survey targets on top of mountains. He made the first ascents of a number of mountains in Washington.

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