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The Late W.H. Bucher: "Astroblemes vs. Geoblemes" Debate of the '60s

I am researching the work of the tough-minded geologist W.H. Bucher
(deceased) who wrote about "cryptoexplosion" structures in the 1950s and
60s (Kathleen Mark's crater book discusses some of his work).  Anyhow,
Bucher was a staunch believer that several alleged impact craters--i.e.,
the Reis basin--are in fact giant, maar-type volcanic structures.
Bucher had amassed some very interesting and unusual data; he even
explained how coesite and shatter cones can be part of volcanic/plutonic
processes.  Any references to where any of his data and notes are
archived (if at all) would be a big help to me.  Also, what other
references are there to coesite and shatter cones being found in
non-impact features--if any?  Thanks! -- Lou Varricchio
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