I believe there were two editions of Karlis' book on the Levin Catalogue, both published by Parks Canada, and both now out-of-print. The second one, of course, was a revised and more-desirable version to acquire and own.

Nevertheless, Karlis' most recent work related to this topic is a very decent article that was presented in Beads Number 16, for 2004 (though published a couple of years later). This is the same issue that has my article on the Carroll Report and the history of glass-beadmaking at Venice—so it's a worthwhile publication to have—and you can still buy it. See the link below.

Be well. Jamey