Holt, Warren
Warren Holt (fl. 1861 - 1881) was an American publisher, school supply merchant, and map seller based in San Francisco, California in the second half of the 19th century. Holt was initially sent to California to act as an agent for the New York based map publisher J. H. Colton and Company. He was quick to recognize the opportunity available to an independent map publisher able to quickly compile and publish maps of the rapidly changing and expanding California political and geographical arena. He partnered with the prominent civil engineer and surveyor, Charles Drayton Gibbes, in 1868 to published a series of highly detailed large format maps of California issued between 1869 and 1878. At various times, Holt maintained offices at 73, 171 and 305 Montgomery Street, as well as at 607 Clay Street, San Francisco.
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