Delf's Inc., 1972 Year 1972 Month June Day 1 Rights Held By Ann Arbor District Library Copyright Creative Commons (Attribution, Non-Commercial, Share-alike) Ann Arbor Historical Signs Photo Subjects Delf's Inc. Spang Micro Laboratory Signs & Signage Plumbing - Heating - Cooling - Cont Offices Medical Offices KMM Associates Inc. Environmental Research Group Businesses Ann Arbor Chiropractic Clinic Ann Arbor Historical Signs 2311 Shelby St