PEBBLE IN THE SKY, Doubleday, 1950, first edition, some light tanning to the upper and lower margins of the covers, very faint tape ghosts to same, some faint off-setting to the end-papers, else a solid very good copy in just about fine dust-wrapper with has been trimmed 1/2 centimeter. The authors first book (save for THE KINETICS OF THE REACTION INACTIVATION OF TYROSINASE DURING ITS CATALYSIS OF THE AEROBIC OXIDATION OF CATECHOL, the author's Ph.D Dissertation first published in 1948) in a long and marvelous career which unfortunately came to a premature halt just about 500 books later. INSCRIBED by the author to a well known member of First Fandom and equally well known Burroughs Bibliophile. Along with PEBBLE IN THE SKY, Bantam, 1957, first soft-cover edition, a near vg copy in full color pictorial wraps.