First Avon Printing: October 1968. Cover by Don Ivan Punchatz, 1758 pages, 60 cent cover price. First paperback edition - the Doubleday hardcover was in 1967. Condition averages VG+: tight and square with flat spine - front & spine look near-Fine. Back cover has light wear and some faint scuffing/scratches. Age tanning is mild and uniform (insides of covers are slightly darker.) Previous owner's name and "property of" written at top of first page; no other writing, stamps or marks.

The Time Hoppers, by Robert Silverberg (1967.) [This is based on "Hopper" from Infinity October 1956.]

In the vastly overpopulated world of the year 2490, one of the more unusual diversions for an utterly bored populace is time-hopping: an escape, via time travel, away from the crush of the 25th century and back to the tranquil past. As a member of the Secretariat of Crime, it is Joseph Quellen's job to put a stop to this one-way traffic in humanity. Quellen is basically a decent and responsible sort, likes privacy - and this is his fatal flaw. He has established through cajolery and bribery a highly illegal hideaway in Africa. When he cracks the unlawful time-hopping operation, Quellen finds its leader is a sly and aggressive little man who also knows about the African hiding-place, which puts Quellen in a nasty dilemma. All at once, time-hopping seems like a good way out for Quellen, too.