Assembling the observing platform of the 60-inch Rockefeller Telescope

The view from inside the partially-completed 60-inch dome, looking approximately east, showing the assembled observing platform of the Rockefeller Telescope. The trusswork of the dome is not clad, and the dome rollers can be seen. Four persons are standing on the platform and two at its base. Note the circular railing on which the platform runs. Written on the plate is "1932 June 16". n/a. Extent: 1 glass plate. Size and dimensions of original material: Height 8.2cm, width 10.7cm, thickness 0.3cm. Condition of original material: Stable. Author(s)/Creator(s): English. Scribe(s): Latin. Publisher(s): Left-to-Right. Editor(s): Unrestricted. Volume number: N/a. Original institution reference: PLB32_01_2056.