It was founded by architect Sidney Stewart, but achieved prominence under Bayard Witt and Eugene C. Seibert.
He worked as a railroad laborer and foreman before obtaining an apprenticeship in civil engineering.
He attended the Case School of Applied Science and Columbia University before entering the office of prominent Fort Worth architects Sanguinet & Staats.
[4] Fred H. Halsey was added as partner in 1911, the firm becoming Witt, Seibert & Company.
[1] Halsey entered government service after dissolving his partnership with Witt, but later returned to architectural practice.