c. 1891 original and nicely aged important early holabird and roche chicago school skyscraper office doorknob fabricated specifically for the building by the p. & f. corbin company, new britain, ct. the pontiac building is the oldest skyscraper designed by holabird and roche. completed in 1891, the 14-story building features some dazzling terra cotta, monogrammed hardware, and ornamental iron elevator cages (repurposed). northwestern executed the terra cotta and elevator ornament was done by winslow brothers. the monogrammed doorknob contains the buildings initials surrounded by a rope pattern border.