George Holt Henshaw
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George Holt Henshaw was a Canadian engineer and draftsman, who worked as engineer in waterworks and for railway companies in Canada, the United States and Denmark. He is particularly known for draftin
George Holt Henshaw portrait
Organizational diagram of the New York and Erie Railroad, 1855
The Improvement of Channels in Sedimentary Rivers, 1889
Daniel McCallum
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Daniel Craig McCallum was a Scottish-born American railroad engineer, general manager of the New York and Erie Railroad and Union Brevet Major General of the United States Military Railroad during the
George Holt Henshaw
…and for railway companies in Canada, the United States and Denmark. He is particularly known for drafting the first organizational chart designed by Daniel McCallum. George Holt Henshaw was born in Montreal, September 1, 1831. At a very early age he demonstrated a strong desire to acquire knowledge of mathematics…
Brig. Gen. McCallum
St. Joseph's Church facade.
Lithographic drawing of McCullam's Patent Timber Bridge, 1852