I found a Federal Signal Model 5 right here (and rainbow water tower): https://www.google.com/maps/place/Oaklandon+Rd+%26+Broadway+St,+Indianapolis,+IN+46236/@39.8762714,-85.9571007,3a,15y,29.04h,95.07t/data=!3m7!1e1 It looks like it used to be part of an abandoned volunteer fire station known as Th...