Calvert Bros, 1974 Year 1974 Rights Held By Ann Arbor District Library Copyright Creative Commons (Attribution, Non-Commercial, Share-alike) LOH Entrepreneurship LOH Entrepreneurship - Featured Ann Arbor Historical Signs Photo Subjects Automobiles - General Businesses Signs & Signage Calvert Brothers Construction Co. Black American Businesses LOH Entrepreneurship LOH Entrepreneurship - Featured Ann Arbor Historical Signs 410 Miller Ave