My birthday can be revealed if you know the cover date on the following Marvel classics:

Tales to Astonish #31

Amazing Adult Fantasy #12

Fantastic Four #4

Tales of Suspense #29

Kid Colt, Outlaw #104

Millie the Model #108

Linda Carter, Student Nurse #5

Hulk #1

Journey Into Mystery #80

Gunsmoke Western #70

Love Romances #99