The Cleveland Union Terminal Collection is the archives of the company that built the Terminal Tower, the union passenger station, the complex of office buildings, post office, department store and the infrastructure of tracks, bridges, signals, electrical catenary structures and yard facility buildings necessary to switch passenger coaches over from steam to electric and bring them in to the downtown area. This was a massive urban redevelopment project that foreshadowed the Rockefeller Center, in New York; gave Cleveland the third-tallest building in the world in 1930; and forever changed the face of Public Square and wide swaths of adjoining neighborhoods.https://engagedscholarship.csuohio.edu/cmpex/1087/thumbnail.jp