Although this Seventh Edition no longer bears their byline, Ken Thompson and Dennis Ritchie remain the fathers and preceptors of the UNIX time-sharing system. Many of the improvements here described bear their mark. - Preface to the Unix Programmer’s Manual, Volume 1
Unix V7 man pages. Unix Version 7 was released in 1979. Full manual is available in the pdf directory.
1 - Commands 2 - System calls 3 - Subroutines 4 - Special files 5 - File formats and conventions 6 - Games 7 - Macro packages and language conventions 8 - Maintenance