Formation of Network Measurement Group
RFC 323, “Formation of Network Measurement Group”, is an Unknown document published in March 1972 by V. Cerf. It has since been updated by RFC 388. The canonical text is published by the RFC Editor.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
The canonical text of RFC 323 is hosted at rfc-editor.org. Available in TXT,HTML.