[1] He was born in Kingston, New York, on 7 January 1857, and studied as a civil engineer.
[2] He was sent to Newport News by his brother-in-law, Eugene White of Brooklyn, who had contracted with railroad magnate Collis P. Huntington to build a cargo terminal at the end of the newly built eastern terminus of the Chesapeake & Ohio Railway on the Virginia Peninsula, in 1880.
In 1902 Post commissioned a handsome Beaux Arts style mansion on Huntington Avenue in the North End Neighborhood of Newport News.
The Post house still stands, surrounded by its original wrought-iron fence at 5600 Huntington Avenue, the largest lot in the North End.
In 1911, he assumed the presidency of Newport News Shipbuilding & Dry Dock Company.