Second paperback edition (1973). First published in hardcover in 1962, this novel is an expansion of "A Voice Across the Years," a story first published in Amazing Stories Quarterly, Winter 1932. Two Earthmen [Merrick Wells and Alvin Schierstedt] meet Ashembe of Murashema, who has come from beyond the stars on an urgent mission.
Used availability for Fletcher Pratt's Alien Planet
January 1973 : UK Paperback
1973 : USA Mass Market Paperback
January 1962 : USA Mass Market Paperback