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original downtown chicago wrigley building interior office door "unilock" with intact bower-barff finish

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UR-33947-22

original and historically important wrigley building "unilock" or unitlock with doorknobs integrated with latch bolt and backplates. the building hardware was salvaged from an office door during renovations.

undated 8 x 10 black and white photo of graham, anderson, probst & white together in daniel burnham's former office. note the wrigley building model and 1893 world's fair plaster maquettes and plaques in the background. i believe the image was taken on the 14th floor of the railway exchange building where the firm of d.h. burnham & co. was located.

ernest graham was daniel burnham’s principal assistant in overseeing construction of the chicago world’s fair of 1893 and contributed to the growth of d. h. burnham & company until burnham’s death in 1912. graham carried on burnham’s architectural practice, first as graham burnham & company and after 1917, as graham, anderson, probst & white.

under graham’s leadership this practice became one of the largest and most prestigious in the united states. the firm was responsible for designing scores of major structures, including railroad stations, banks, office buildings, museums, department stores, theatres, and post offices.

courtesy of bldg. 51 archive.