Architect unknown (possibly designed by R. Duane Conner)
701 NW 13th, OKC
Built in 1960 on the fringes of Heritage Hills, the long and low Oklahoma City Blood Bank replaced an aging two-story frame house in a residential area that was rapidly converting to a business district. The 5,200-square-foot building was composed of a series of zig-zagging, thin-shell concrete hyperbolic paraboloids hovering over a band of clerestory windows. The building appears on the 2009 OKC MCM survey.