Bob Taylor asked about a past MMD item on second-hand book searches.
It was probably the one I mentioned a while back.  The two I found
to be very good are:

Interloc -- http://daniel.interloc.com/cgi-bin/texis/scripts/frameless
for their search page, or just -- http://daniel.interloc.com -- for
their title page.

Advanced Book Exchange (ABE) --
http://www.abebooks.com/cgi/abe.exe/routera^progName=inventoryKeys^phase=2
-- for their search page or, --  http://www.abebooks.com -- for their
title page.

You can input the author, title, publisher or subject -- the more info,
the more specific the search.  It then gives you a list of matching
books with a short description, price and a direct link to the sellers
email.

There seems to be quite a few original Ampico catalogues on Interloc at
the moment.  Happy searching!

Peter Coggins
(Blue Mtns. Australia)