warlock664 wrote:
If we're talking about comics PUBLISHED during our birth month, for me the most significant event I'm aware of was the debut of Hawkeye in TALES OF SUSPENSE #57 (June 1964, cover date September 1964).
I believe Spider-Man met Daredevil for the first time, in AMAZING SPIDER-MAN #16, that month as well.

You saved me the legwork here, although I think June '64 coverdate might be better.