W. Hasell Wilson
William Hasell Wilson (1811–1902) was a prominent American surveyor and civil engineer for both the Reading and Pennsylvania Railroads in the 19th century. Two of his sons, Joseph Miller Wilson (1838–1902) and Henry W. Wilson (1844–1910) went on to found Wilson Brothers & Company a prominent Victorian-era architecture and engineering firm established in Philadelphia, Pennsylvania, that was especially noted for its structural expertise.
Read article on Wikipedia