Going though my Computer History Museum photos and I found the original copy of this 1971 Telnet system diagram from RFC 158. Now you can compare the charming pencil on lined notebook paper to the official scanned version that's been the only one available for decades.

I love this stuff, it reminds me that the internet was invented by humans jotting things down on whatever paper was at hand and not godlike programmers planning everything exquisitely.

write.as/365-rfcs/rfc-158

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