I worked for a contractor as a communications journeyman back in the day. I had done work in the Chicago Board of Trade which is located at the Southern end of LaSalle Street in the Loop in Chicago Illinois. I had spent time in that building when I had been an apprentice many years prior to that job. Anyway, the building managers and the head of communications liked my work so much that they hammered out a deal and "bought" my contract to be the buildings on-site tech, a job that lasted for some 14 years. I knew where ALL of the skeletons were buried and who was who. Anyway, that building was opened in 1929 and part of a major renovation project, all of the passenger elevator cars were replaced with modern units. I was assigned the task of bringing phone services into the controllers for those cars. (21 in all) The mechanical rooms, which most were split between two floors, contained all of the original electric motors, contactors and raceways that had been installed when the building first opened. It was a great deal of fun to be able to examine and get up and close to all of it and to see it in motion as they did not shut the cars down as I was doing my job. Those rooms were like time capsules to me and I can still recall the loud clacking of the contactors and the smell of machine oil..... ahhh, the good old days.
BC1
Jim