Future History of the Polesotechnic League is a 7-book series first released in 1958 with contributions by Poul Anderson and Jens Carstensen.
1968 • 2 Readers • 224 pages
1978 • 1 Reader • 103 pages
1978 • 2 Readers • 366 pages • 3
1958 • 1 Reader • 209 pages • 3
1966 • 1 Reader • 190 pages • 3
1964 • 1 Reader • 159 pages