Title
Joseph M. Chamberlain
Reference
ZPC.S6
Creator
Scope and Content
Correspondence, operation notes, quotations, contracts, and invoices and receipts. Correspondence with Siegfried A. Kessler, G. Kindler, Dr. Werner E. Degenhard, Dr. Gerhard Kühn, Karl Windell, H. Degenhardt, Carl A. Schalhorn\v Hh\v0 of Carl Zeiss, Inc. regarding the purchase, installation, and noise problems with planetarium projector Model VI. Information about the brightness controls from Dr. Erich Übelacker of Carl Zeiss, Inc. Also correspondence with Carl A. Schalhorn of Carl Zeiss, Inc. Correspondence with John F. Detschel and Dr. Erich Übelacker of Zeiss regarding the Horizontal Grid System Projectors automation of the planetarium.
Level of description
SERIES
