Preston Murdoch Geren Sr. was an American architect and engineer. Part of a prominent architectural family in Texas, he designed or served as associate architect for many of Fort Worth's most notable buildings constructed during his working life.

Sanguinet & Staats was an architectural firm based in Fort Worth, Texas, with as many as five branch offices in Texas. The firm specialized in steel-frame construction and built many skyscrapers in Texas. The firm also accepted commissions for residential buildings, and designed many buildings listed on the National Register of Historic Places.