Comic Title: Adventure Comics #278
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: November 1960
On Sale Date: September 29, 1960 Newsstand Date September 29, 1960
Source: House Ad, Superman's Girl Friend Lois Lane #21, Page 11

Copyright Date September 29, 1960
Source: Library of Congress, Periodicals 1960

Frequency: Monthly
Cover Price: $0.10
Page Count: 32
Editor: Mort Weisinger

Title: "Supergirl in Smallville"
Pages: 12

Feature(s):
Superboy (of Earth-1)

Writer: Otto Binder
Artist: Al Plastino

Reprinted In:
Superboy #129 (1966)
Showcase Presents:Supergirl Vol. 1 TPB (2008)

Feature Character(s)

• Superboy (last appearance in Adventure Comics #277; next appearance in Superboy #85)

Guest Star(s)

• Supergirl (last appearance in Action Comics #270; next appearance in Action Comics #271)

Supporting Character(s)

• Jonathan Kent (last appearance in Adventure Comics #277; next appearance in Superboy #85)
• Martha Kent (last appearance in Adventure Comics #277; next appearance in Superboy #85)
• Lana Lang (last appearance in Adventure Comics #277; next appearance in Superboy #85)
• Krypto (last appearance in Adventure Comics #277; next appearance in Superboy #85)

Other Character(s)

• Nancy (an orphan girl; no further appearances)
• Mr. and Mrs. Jones (adoptive parents; no further appearances)

Synopsis:
Supergirl travels to the past and meets Mr. and Mrs. Kent. She decides to practice hiding her secret identity, so that Superman will allow her to be adopted when she returns to the present. Supergirl stays with the Kents as their niece, Linda Kent.

Supergirl spends the next few days protecting her secret identity from Superboy, Lana Lang, and even Krypto. She also keeps her existance a secret from everyone, but the Kents. She performs her task well, but one evening she returns to the Kent house through a window instead of the secret tunnel. Fortunately no one sees her, but it proves she is not yet skilled enough to completely protect her identity. She returns to the present, disheartened that she is still not ready to be adopted.