[1] In 1910, Hedrick started a career in engineering, working briefly for Lane Brothers in his home state.
Later that year he accepted a position at the Dallas office of Stone and Webster Engineering Corporation.
[2] Hedrick was accepted into the partnership of Sanguinet & Staats in 1921, an architecture firm based in Fort Worth which specialized in skyscrapers.
He was responsible for many of the tallest buildings in Fort Worth, and several of his works are included on the National Register of Historic Places.
With his extensive university and government work, at one time his firm was the third-largest in the United States.