Public attachment description
Committee Correspondence / Printing of the Refraction Section
Four Committee items separating recorded optical observations from comparative or interpretive material in the published report.
Public attachment description
RA-57-104-M02
Four Committee items separating recorded optical observations from comparative or interpretive material in the published report.

This correspondence predates the 1957 accession. The copy is filed here as a research cross-reference; it is not an acquisition record for RA-57-104.