Provenance
Presented by the National Bureau of Standards and accessioned, 07/25/1975, (1975 01f).
Location of originals:Holder of original unknown.
General physical description
1 3/4 inch videocassette and a 4-page transcript. Videotaped by National Bureau of Standards, n.d.
American Philosophical Society 105 South Fifth Street Philadelphia, PA, 19106 215-440-3400 manuscripts@amphilsoc.org