Request For Comments storage
RFC by index
Documents by J. Romaguera
Rules for downgrading messages from X.400/88 to X.400/84 when MIME content-types are present in the messages
X.400(1988) for the Academic and Research Community in Europe
Introducing Project Long Bud: Internet Pilot Project for the Deployment of X.500 Directory Information in Support of X.400 Routing
Meanwhile in the world...