
Elisha Graves Otis’s invention of the safe elevator in the 1850s greatly increased the practicality of constructing tall buildings and played a significant role in the evolution of the skyscraper. This collection contains elevator plans for forty-seven buildings, prepared by the Chicago office of Otis Elevator Company between 1903 and 1906 for such architectural firms as D.H. Burnham & Co., Holabird & Roche, and Richard Schmidt.
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Rookery Building, Chicago, Illinois, LaSalle Street Elevation
Burnham & Root American, 1873–1891

Land Title and Trust Building with Addition, Philadelphia, Pennsylvania, Perspective Rendering
D. H. Burnham & Co. (American, 1896–1912) Hughson Hawley (American, 19th century)

Rookery Building, 209 South La Salle Street, Chicago, Illinois: Grille from Interior Central Court
Burnham & Root (American, 1873-1891) Architect and designer: John Wellborn Root (American, 1850-1891)