Thinker appears in 4 issues in this volume.
Flash of Two Worlds!
September 1, 1961
April 1, 1972
The Rag Doll Runs Wild!; Half a Green Lantern Is Better Than None!; Secret of the Handicapped Boys; The Man Who Wore Ten Hats!; The Secret City; The Girl From The Super-Fast Dimension!;
October 1, 1974
1981--A Flash Odyssey
August 1, 1981
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