Signedon label: ITT ELECTRON TUBE DIVISION / 3700 East Pontiac Street, Fort Wayne, Indiana
InscribedTube etched: N - 3
Historical AttributesBrought back to CHSI on August 18, 2005 by Sara Schechner and Michael Kelley from Oak Ridge Observatory (Smithsonian Astrophysical Observatory), Harvard, Mass.
ProvenanceHarvard College Observatory, Oak Ridge Station; transfer to CHSI in 2005.