A previously out-of-print early work by grand master Robert Silverberg.
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First published in 1958 under the pseudonym David Osborne, Invisible Barriers is an expansion of the short story "And the Walls Came Tumbling Down" (1957), which was published under the author's own name.
Robert Silverberg (1935- ) Robert Silverberg was born in Brooklyn, New York, in 1935, and is one of the most prolific authors of all time, writing not just SF & Fantasy, but extensive non-fiction and a large number of pseudonymously published erotica novels. In his first years as a professional writer, his output regularly exceeded a million words per year.
He has won and been nominated for the Hugo and Nebula awards dozens of times as both writer and editor, and in 2004 received the SFWA Grand Master Award. Among his many acclaimed and bestselling novels are A Time of Changes, The Book of Skulls, Dying Inside and Lord Valentine's Castle.
Robert Silverberg lives on the West Coast of the United States with his wife, author, editor and art critic, Karen Haber.
For more information see www.sf-encyclopedia.com/entry/silverberg_robert
