Watergate and GR epigraph: source

[Tore Rye Andersen]

>From: Dave Monroe <monropolitan at yahoo.com>
>
>Again, what was the source for this?  Thanks ...
>
>--- Tore Rye Andersen <torerye at hotmail.com> wrote:
>
> > The original epigraph to part IV - the Joni
> > Mitchell song from 1968 ...

Once again, Pynchon's bibliographer Clifford Mead. See: Pynchon Notes 11, p. 
64:

http://www.ham.muohio.edu/~krafftjm/pn/pn011.pdf

...a-and Weisenburger repeats the information in his GR Companion, p. 264.