Content Type Header Field

A CONTENT-TYPE HEADER FIELD FOR INTERNET MESSAGES
Content-type header field for Internet messages
STATUS OF THIS MEMO A CONTENT-TYPE HEADER FIELD FOR INTERNET MESSAGES
Network Working Group M. Sirbu Request for Comments: 1049 CMU March 1988 A CONTENT-TYPE HEADER FIELD FOR INTERNET MESSAGES
Content-type header field for Internet messages
MIME application/calendar Content Type
Content-Digest and EDigest Header Fields
Content-Signature Header Field for HTTP
MQHTTP40004: Invalid Content-Type specified
The Content-MD5 Header Field