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Aug 1st, 1964
1st Earth-Three, 1st Silver Age Appearance of Starman, Justice Society of America crossover. 1st Appearance of Crime Syndicate.
Aug 1st, 1967
1st Appearance of Golden Age Robin in Silver Age, Justice Society of America Appearance
Nov 1st, 1969
1st appearance of Dinah Laurel Lance, Black Canary leaves Earth-2 to join the Justice League
Aug 1st, 1970
Justice Society Appearance, 1st cameo Appearance of Golden Age Batman in Silver Age
Feb 1st, 1971
1st Appearance of the Champions of Angor, (Wandjina, Silver Sorceress, Blue Jay & Jack B. Quick). Zatanna Appearance.
Mar 1st, 1972
Origin of JLA retold., 1st Silver Age Appearance of Sargon the Sorcerer (cameo last page)
Oct 1st, 1973
1st Appearance of The Freedom Fighters: (Uncle Sam, Human Bomb, Black Condor, Phantom Lady & The Ray)
Nov 1st, 1976
1st Appearance of Bulletman, Bulletgirl, Spy Smasher, Mr. Scarlet and Earth-Two Joker since Golden Age
Dec 1st, 1976
Bulletman, Bulletgirl, Marvel Family, Ibis & Spy Smasher Appearance, Justice Society crossover.
Mar 1st, 1977
2nd Appearance of Manhunter (Mark Shaw) See 1st Issue Special #5 for 1st Appearance
Oct 1st, 1978
JSA crossover. Jonah Hex, Enemy Ace, Viking Prince, Miss Liberty &, Black Pirate Appearance
Jun 1st, 1979
Secret Society of Super-Villains continue inhabiting the bodies of the Justice League
Jul 1st, 1979
Justice League of America & Secret Society of Super-Villains resume actual identities
Oct 1st, 1981
Secret Society of Super Villains & Justice Society of America Appearance. Double Page Pin-Up by George Perez
Oct 1st, 1981
Secret Society of Super Villains & Justice Society of America Appearance. Double Page Pin-Up by George Perez