Barsoom is a 12-book series with 12 primary works first released in 1912 with contributions by Edgar Rice Burroughs and Stuart Moore.
1912 • 182 Readers • 384 pages • 3.5
1912 • 38 Readers • 247 pages • 3.4
1916 • 27 Readers • 174 pages • 3.5
1916 • 4 Readers • 158 pages • 3
1922 • 2 Readers • 285 pages • 4
1927 • 1 Reader • 4
1927 • 1 Reader • 172 pages • 4
1930 • 10 Readers • 239 pages • 3.8
1935 • 7 Readers • 191 pages • 3.3
1939 • 9 Readers • 160 pages • 3.5
1941 • 9 Readers • 192 pages • 3.3
2012 • 1 Reader • 557 pages • 5