Times Without Number by John Brunner Ace Books, 1962 Price I paid: $6.99 ÷ 2
Traveling backwards in time, Don Miguel had to undo the errors and interruptions of other time-interlopers; he had to preserve the present. Even the most insignificant nudging of the past could entirely alter his world! And he suspected that this had already happened: that a maniacal genius crazed with a desire for nationalist vindication had plotted to alter the victorious outcome of the Spanish Armada of 1588—thus changing recorded history and perhaps even imperiling the mighty Spanish Empire of 1988!
If Don Miguel did not successfully intercede, when he came back to the present he might find a different world…a different time…a time in which he probably didn’t even exist!
I Speak for Earth by Keith Woodcott Ace Books, 1961 Price I paid: none
“One citizen of your planet shall go to the capital of the Federation of Worlds. He shall live there for thirty days. If your representative can survive and demonstrate the ability to exist in a civilized society with creatures whose outward appearance and manner of thinking differ from his own, you shall pass the test. You will be permitted to send your starships to other planets of the galaxy.
If he fails the test, if prejudice, fear, intolerance, or stupidity trip him up, then your world will be sealed off from the stars forever!”
This was the ultimatum from space. The task before our world then was—who shall go? What man or woman could be found to take this frightening test for the whole of humanity and be certain not to fail?
It’s an edge-of-the-seat science-fiction thriller.
The Wrong End of Time by John Brunner
DAW Books, 1971
Price I paid: 90¢
The time is the future. The place, an America so isolated by fear that it is cut off from the rest of the world by a massive defense system. Into this armed, barricaded state comes a young Russian scientist bearing a strange—and almost unbelievable story:
Superior, intelligent life—of a far higher order than any on earth—has been detected near the planet Pluto. Immune themselves by virtue of their far greater intelligence, these Aliens are about to destroy the planet Earth.