Original printed wrappers.pp 46-66. Inscribed, "with the author's best regards, 21.I.1920". $125
Silberstein was as we all know an interesting thinker, working early and with some elegance in relativity, though he did run into a spot of bother with Einstein in which the good Dr. Silberstein fared not so well. I've always rather "liked" Silberstein for his early work.