The original version of this book was rewritten in 1971 by Vincent Buranelli resulting in two different stories with the same title.

The original version of this book was shortened in 1968 by Priscilla Baker-Carr resulting in two similar stories sharing the same title.

The original version of this book was rewritten in 1967 by Tom Mulvey resulting in two different stories with the same title.

The original version of this book was rewritten in 1964 by David Grambs resulting in two different stories with the same title.

The original version of this book was shortened in 1970 by Priscilla Baker-Carr resulting in two different stories with the same title.

The original version of this book was rewritten in 1959 by Harriet S. Adams resulting in two different stories with the same title.

The original version of this book was shortened to 177 pages in 1966 by David Grambs resulting in two similar stories sharing the same title.

His amazingly fecund imagination has resulted in nearly eight hundred published stories since his first sale in 1955.

The original version of this book was rewritten in 1970 by Richard Deming resulting in two different stories with the same title.

The original version of this book was rewritten in 1962 by James Buechler resulting in two different stories with the same title.