UNKNOWN & UNKNOWN WORLDS                                          Edited by Stanley Schmidt (& Martin H.Greenberg)                    Baen Books & Bristol Park Books, 1st Pr./reprint, 1988/1993    Condition:   Near Very Good & Near Fine                                                                                                                                          These two companion volumes contain a total of 34 stories (no duplicates)  from the famous fantasy publication  (1939-1943) and comprise a total of 821 pages.   Modest cover edge/corner/spine edge wear and store stamp/price stamp inside on the smaller pb, and slight corner wear and a small, light mark at top of  fore-edges on the trade-size softcover.