As a Doctor of Philosophy, John Hellebrand had no specific training in the book trade before jumping into the trade feet first in 1976. He spent his first few years book scouting and learning the trade, quickly developing a keen eye for a valuable book. John joined the ABAA in 1979.

Palinurus Antiquarian Books operates out of Jenkintown, PA and specializes in Americana, Economics, Engineering, Mathematics, Medicine, Philosophy, Science, and Technology Books and Manuscripts prior to 1850.