For starters? Him because he is 'the father' of the *BSD filesystems:<p><a href="https://en.wikipedia.org/wiki/Marshall_Kirk_McKusick" rel="nofollow">https://en.wikipedia.org/wiki/Marshall_Kirk_McKusick</a><p>That's all online via the web, as PDF, annotated and whatnot.<p>For 'something else': <a href="https://en.wikipedia.org/wiki/Be_File_System" rel="nofollow">https://en.wikipedia.org/wiki/Be_File_System</a><p>As living on via Haiku, and documented there under 'Other Resources':<p><a href="https://www.haiku-os.org/documents/" rel="nofollow">https://www.haiku-os.org/documents/</a>