Andy Hoffman writes _ and Webster apparently never published any
 catalogue to help future scholars._
I received a listing from a Library of Congress search a friend of mine did
close to two years ago:
Webster, Charles L. (firm). _Illustrated catalogue of Charles L. Webster and
Co.'s publications. New York: Charles l. Webster and Co., 1892.
While this was some time before the ultimate demise of CLW & Co., it may
prove to be useful if I can ever get my hands on it.

Marc Koechig