After going back and rereading the catalog, I think I passed you fake news. The date ranges I gave are the "stamp issue period of the stamps in which the perfin has been found. The EKU and LKU for the non-precancel are 2/17/1935 and 10/25/1939, respectively. For the precancel, they are 1/5/1940 and 3/10/1987, respectively.
It is a very niche publication, so I doubt that any library other than a philatelic one would have it. And as it was published this past spring, it may be awhile before there are any "old copies" out there.