From my knowledge of the Kress-Goldsmith collection, most of the 
attributions (and especially the wrong ones) made in the catalog can be 
traced back to Henry Higgs's famous (though now outdated) Bibliography 
of economics published in 1935.
Kenneth Carpenter is probably the man to contact to know more about the 
precise procedure followed to make the Kress-Goldsmith collection 
catalog (he was chief-librarian of the Kress collection for several 
years).

Lo?c Charles