1) Superman from Action Comics #1 don't remember

2) Batman from Detective Comics #27 Batman from the 30s to the 70s

3) Spider-Man from Amazing Fantasy #15 Origins of Marvel Comics

4) Fantastic Four #1 Origins of Marvel Comics

5) Batman (new look) from Detective Comics #327 Dc Comics Millennium Edition

6) Green Lantern/Green Arrow #76 never read it

7) Superboy (and the LSH) from Adventure Comics #247 never read it

8) Avengers #4 Captain America Sentinel of Liberty By Stan Lee (Fireside)

9) The Brave and the Bold #28 Dc Comics Millennium Edition

10) Avengers #16 Avengers #150

11) X-Men #1 Son of Origins of Marvel Comics

12) Thor from Journey Into Mystery #83 Origins of Marvel Comics

13) Supergirl from Action Comics #252 don't remember

14) Captain America (origin story) from Captain America Comics #1 Marvel Milestone Edition: Captain America # 1