A Bibliography of Glass Trade Beads in North America.
Karlis Karklins and Roderick Sprague. South Fork Press, Moscow, Idaho, 1980. iii + 51 pp., index. $5.45.
A Bibliography of Glass Trade Beads in North America - First Supplement.
Karlis Karklins and Roderick Sprague. Promontory Press, Ottawa, Ontario, 1987. iii + 72 pp., index. $5.45.