The single-story building became the Otis Elevator Company's Portland headquarters in 1920, and was used for offices, servicing and parts storage. It remained in use by the Otis company until 1975.[2]
^"Oregon National Register List"(PDF). Oregon Parks and Recreation Department. June 6, 2011. p. 38. Archived from the original(PDF) on April 25, 2018. Retrieved August 6, 2023.