in Batman (2ª Série) (Editora Brasil-América [EBAL], 1961 series) #69
in Batman (Editorial Novaro, 1954 series) #257 (11 de febrero de 1965)
in Batman: The Dynamic Duo Archives (DC, 2003 series) #1 ([April] 2003)
in Batman: Cover to Cover (DC, 2005 series) ([June] 2005)
in Showcase Presents: Batman (DC, 2006 series) #1 ([October] 2006)
in Tales of the Batman: Carmine Infantino (DC, 2014 series) ([July] 2014)
On-sale date from copyright registration.
Editor Julius Schwartz's pay records have Bob Kane on pencils. However, it is known that Bob Kane contracted the artwork out to Sheldon Moldoff.
Story in 2 parts: unnumbered part 1 (7.67 pages) and Part 2 (3.67 pages; same title as part 1 but without exclamation point).
from Showcase (DC, 1956 series) #19 (March-April 1959) [left half only, reconfigured]
in From Beyond the Unknown (DC, 1969 series) #9 (February-March 1971)On the page immediately following page 8 of the previous story sequence.
Information on the planet Pluto.
Letters of comment from Mike Friedrich (future comics writer), Stephen Mahinka, Mickey Gaither and Mary Royeton.
Editor Julius Schwartz's pay records have Bob Kane on pencils. However, it is known that Bob Kane contracted the artwork out to Sheldon Moldoff.
This story is continued in part from the second story of Batman #165.
A caption at the end of the story indicates that a follow-up to this story was planned, but was never published.