Comment by ppint.:
doubleday science fiction book club first printing, first h/cvr edition
initially for sale to the science fiction book club members only; later also for sale to members of the other doubleday book clubs as an option
not for sale to the general public nor for distribution via the wholesale or retail book or news trades
reprint collection of one novella and three novelettes
cover (d-j) art by don ivan punchatz (signed with his dotted monogram, credited on d-j back flap)
cover (d-j) price (none, iirc)
192pp. including titles, indicia, table-of-contents etc, bound with endpapers between covered boards
printer's gutter code 23L on p.187 = 6/70; at least one later printing(s) bears a different gutter code(s)