Pynchon's reply

[Michael Bailey]

> Keith quoted:
> He would burn his letters in a bonfire; it would take most of the day...
> And he would pay the cost"
>     (_Wanting_ by Richard Flanagan, pp. 47-8)
>

oh! oh! - and, that Richard Flanagan looks like worth a read...

and finally ('cause I'm spent) -- the Rob Jackson article is mentioned
in the most likely place, the cumulative bibliography of Pynchon Notes
http://w3.ham.muohio.edu/%7Ekrafftjm/pncumbib.html

and is listed thus:
Jackson, Robert. "Intertextualism: The Case of Pynchon and Patrick
White." Pynchon Notes  46–49 (2000–2001): 60–104.