Comic Title: Blackhawk #189
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: October 1963
On Sale Date: August 8, 1963 Copyright Date August 8, 1963
Source: Library of Congress, Periodicals 1963

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Jack Schiff

Title: "The Super Cavemen of 15,000 B.C."
Pages: 25

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

Writer: Dave Wood
Penciller: Dick Dillin
Inker: Charles Cuidera

Feature Character(s)

• Blackhawk (last appearance in Blackhawk #188; next appearance in Blackhawk #190)

Supporting Character(s)

• The Blackhawks (last appearance in Blackhawk #188; next appearance in Blackhawk #190)
• Hendrickson (last appearance in Blackhawk #188; next appearance in Blackhawk #190)
• Stanislaus (last appearance in Blackhawk #188; next appearance in Blackhawk #190)
• Andre (last appearance in Blackhawk #188; next appearance in Blackhawk #190)
• Chuck (last appearance in Blackhawk #188; next appearance in Blackhawk #190)
• Olaf (last appearance in Blackhawk #188; next appearance in Blackhawk #190)
• Chop Chop (last appearance in Blackhawk #188; next appearance in Blackhawk #190)

Villain(s)

• Quig and Rago (a professor’s assistant and his henchman; no further appearances)

Other Character(s)

• Detective-Sleuth Dana and his two assistants (law officers of the year 2048; no further appearances)
• A group of cavemen (no further appearances)
• Various Roman citizens (no further appearances)

Comments:
Chap. 2: "The Doomed Gladiators"
Chap. 3: "The War With Super Weapons"

Synopsis:
The Blackhawks witness some time traveling criminals defeat law officers from the year 2048, then escape into the past. The team agrees to travel back in time to prevent the criminals from recovering a cache of weapons hidden in the past by a future scientist.

Half the team visits ancient Rome while the others visit the time of prehistoric cavemen. The Blackhawks in Rome fail to prevent the crooks from completing their mission, while the other team is attacked by cavemen using the futuristic weapons. When the crooks arrive to take the final cache of weapons, the Blackhawks team with the cavemen, but still fail to defeat the crooks. Only the timely arrival of the first team of Blackhawks, who have found another time travel device, allow the Black Knights to triumph and capture the future criminals.