To Whom It May Concern,
1) TeXlive 2008: http://ftp.math.utah.edu/.../historic/systems/texlive/2008/
2) TeXlive 2009: http://ftp.math.utah.edu/.../historic/systems/texlive/2009/
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14) TeXlive 2021 http://ftp.math.utah.edu/.../historic/systems/texlive/2021/
1) TeXlive 2008: http://ftp.math.utah.edu/.../historic/systems/texlive/2008/
2) TeXlive 2009: http://ftp.math.utah.edu/.../historic/systems/texlive/2009/
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14) TeXlive 2021 http://ftp.math.utah.edu/.../historic/systems/texlive/2021/
Not a complete reference manual but a friendly introduction to LaTeX
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