Issue 48
Adventure Comics (1938-1983) #393
"The Girl Who Knew Supergirl's Secrets!" Starring Supergirl, Jan Butler, Zor-El (flashback), and Dr. Alexander.
Creators

From
Adventure Comics (1935-1983) Series
"The Girl Who Knew Supergirl's Secrets!" Starring Supergirl, Jan Butler, Zor-El (flashback), and Dr. Alexander.

From
Adventure Comics (1935-1983) Series