1940s Highlights 1945 Wally Frankfurt and Truett Coston establish Coston & Frankfurt. Harold Short joins the firm and work begins in earnest from the downtown APCO Tower building. 1946 Air conditioning comes into its own in the late 1940’s and the firm responds to this new technology designing the first systems for APCO Tower and ONG. 1947 The firm begins their 60-year relationship with OU and OSU, designing central utility power plants on both campuses. 1948 Through design and engineering efforts of the firm Oklahoma Medical Research Foundation begins planning their first research building. 1949 At OU Medical Center a new Outpatient Hospital project is planned by the firm for their burgeoning new campus. 1949 Harold Short becomes a partner and the firm’s name changes to Coston Frankfurt Short.