the vernon companion Michael A. Perovich 2014 OOP
http://www.ebay.com/itm/the-vernon-comp ... 3045995094
Rethinking SW Erdnase Tom Sawyer OOP
http://www.ebay.com/itm/Rethinking-SW-E ... 3045985307
and one from 1977
PROFESSOR HOFFMAN: A STUDY J.B. Findlay and Thomas A. Sawyer 1977
http://www.ebay.com/itm/PROFESSOR-HOFFM ... 3045978210
and the rest
https://www.ebay.com/sch/rickthemagican ... 7675.l2562