History of FTP
1971: The original specification for the File Transfer Protocol was written by Abhay Bhushan and published as RFC 114 on 16 April 1971, before TCP and IP even existed.
1980: The old version of File Transfer Protocol is replaced with RFC 765.
1985: A new version of the File Transfer Protocol, RFC 959, is published. This is the same specifications that are being used today.
1997: In June of 1996 a revision was made to RFC 959 to add security extension to the File Transfer Protocol (RFC 2228).
1998: In September of 1998 another revision was made to RFC 959 to add support for IPv6 and defined a new type of passive mode (RFC 2428).