including his interaction with Roberts and the IPT Office. Detailed technical reference works NTIS documents may be available from External links Timeline. Personal anecdote of the first message ever sent over the ARPANET American inventions History of the Internet Computer-related introductions in 1969 Internet properties established in 1969 Internet properties disestablished in 1990 1969 establishments in the United States Internet in the United States 1990 disestablishments in the United States