Search Worlds Without End

In one split second they were hurled across time into a world one million years away. A surprise nuclear war may cause the End of the World, but not the way anyone could have imagined. A classic science fiction tale originally published in Galaxy Magazine. The pleasant little American city of Middletown is the first target in an atomic war - but instead of blowing Middletown to smithereens, the super-hydrogen bomb blows it right off the map - to somewhere else! First there is the new thin coldness of the air, the blazing corona and dullness of the sun, the visibility of the stars in high daylight. Then comes the inhabitant's terrifying discovery that Middletown is a twentieth-century oasis of paved streets and houses in a desolate brown world without trees, without water, apparently without life, in the unimaginably far-distant future.

(Amazon.com)

Due to his research into the lives of geniuses, Dr Julius Conrad of the Wellington Institute for the Study of the Humanities has developed a radical hypothesis: Namely, that the work of most geniuses, past and present, has been directed by minds from a ruthless future which take possession of either the unstable geniuses themselves or else of unstable people who are in a position to change the course of the geniuses' work. When Conrad is murdered on the eve of announcing his theory, journalist Henry Sanford and the Institute's brainy Liza Drew investigate. Soon the pair discover their own lives are in jeopardy, for the people of the future are determined that no one of our era will ever reveal their existence or the role they play in human history.

Martin Padway, 20th-century archaeologist, becomes a reluctant one-way time-traveller, landing in Rome on the verge of the Dark Ages. With no way home, he sets out to make the world he's in a better place.

In short order, Padway "invents" and introduces such things as Printing and newspapers, Arabic numerals, Double entry bookkeeping, Copernican astronomy, and, most important -- Distilling. And the world of decaying Rome will never be the same!

A Variant Title for The Fairy Chessmen:

A mathematician whose research involves a type of chess played with variable rules ("fairy chess") is the only one able to solve an "equation from the future" in which the constants are treated as variables that the "bad guys" are going to use to win World War III.

Two people awaken from Suspended Animation to find themselves in conflict with a dictatorship.

While vacationing in Italy, 19-year-old Leo Thrasher rashly experiments with a radical new science. The result: he "reflects" himself 500 years back in time and must deal with life in the middle ages as he strives to return to the present. And in the 20th century, the memoirs of Leonardo da Vinci are unearthed.