| Issue | #277 |
| Published | June 1961 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Mort Weisinger |
| Characters | Superman; Supergirl; Streaky; Krypto |
| Genre | superhero |
| Pencils | Curt Swan |
| Inks | Stan Kaye |
| Reprinted | in Showcase Presents Superman (DC, 2005 series) #3; in Supergirl Archives (DC, 2001 series) #2; in Showcase Presents: Supergirl (DC, 2007 series) #1 |
| Characters | Superman; Lois Lane; Jimmy Olsen; Perry White; Lex Luthor (villain); Green Kryptonite; Red Kryptonite; White Kryptonite; Blue Kryptonite; Yellow Kryptonite (intro); Luthor's Lair; Superman Robot |
| Genre | superhero |
| Script | Bill Finger |
| Pencils | Curt Swan |
| Inks | John Forte |
| Notes | 23rd anniversary story. Inker credit confirmed by Pat Lang (April 11, 2004). Inker credit previously given to: George Klein (Gene Reed credit) or Stan Kaye. |
| Reprinted | in 80 Page Giant (DC, 1964 series) #11, (June 1965); in Best of DC, The (DC, 1979 series) #16 (September 1981); in Showcase Presents Superman (DC, 2005 series) #3 |
| Characters | Supergirl; Streaky; Krypto; Superman; Green Kryptonite; Mr. Mxyzptlk (image); The Interplanetary Multi-Dimensional Practical Jokers Club; Super-Monkey (cameo) |
| Genre | superhero |
| Script | Jerry Siegel |
| Pencils | Jim Mooney |
| Inks | Jim Mooney |
| Reprinted | in Action Comics (DC, 1938 series) #373 (March 1969); in Supergirl Archives (DC, 2001 series) #2; in Showcase Presents: Supergirl (DC, 2007 series) #1 |