Gregory's Server"The land before modern APIs" by Darius Kazemi
(@darius)
Nice history of HTTP status codes.
"""
The numeric codes are assigned by groups [to] hopefully cover other protocols besides RJE (like FTP).
"""
This is from RFC 360, about a Remote Job Entry protocol (RJE), submitted in 1972. You know you're in deep, when reading a three-digit IETF RFC!