MIME

MIME (MultiMedia Internet Mail Extensions) is a proposed standard for the exchange of mixed format information.

From the thumper archive, there is:

Overview

Internet Multimedia Mail with MIME: Emerging Standards for Interoperability. Paper accepted for ULPAA92.

Body Formats

MIME (Multipurpose Internet Mail Extensions): Mechanisms for Specifying and Describing the Format of Internet Message Bodies. Draft of RFC.

MIME Gateway

Implications of MIME for Internet Mail Gateways. Draft of RFC.

README

which came with it.