Comic Title: Justice League of America #89
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: May 1971
On Sale Date: March 4, 1971 Copyright Date March 4, 1971
Source: Library of Congress, Periodicals 1971

Frequency: Monthly, (with the exception of Jan., Apr., and July)
Cover Price: $0.15
Page Count: 32
Editor: Julius Schwartz

Title: "The Most Dangerous Dreams of All"
Pages: 22

Feature(s):
Justice League of America (of Earth-1)

Writer: Mike Friedrich
Penciller: Dick Dillin
Inker: Joe Giella

Reprinted In:
Showcase Presents:Justice League of America Vol. 5 TPB (2011)
Justice League of America Archives Vol. 10 HC (2012)
Justice League of America:The Bronze Age Omnibus Vol. 1 HC (2017)
Justice League of America:The Last Survivors of Earth TPB (2019)

Feature Character(s)

• Justice League of America (last appearance in World's Finest Comics #201; next appearance in Justice League of America #90)
• Superman (last appearance in Action Comics #399; next appearance in Superman #237)
• Batman (last appearance in Detective Comics #410; next appearance in Batman #231)
• Flash (last appearance in Flash #206; next appearance in Flash #207)
• Green Lantern (last appearance in Green Lantern #83; next appearance in Green Lantern #84)
• Aquaman (last appearance in Justice League of America #88; next appearance in World's Finest Comics #203)
• Green Arrow (last appearance in Green Lantern #83; next appearance in Green Lantern #84)
• Atom (last appearance in World's Finest Comics #201; next appearance in Justice League of America #90)
• Hawkman (last appearance in World's Finest Comics #201; next appearance in Justice League of America #90)
• Black Canary (last appearance in Green Lantern #83; next appearance in Green Lantern #84)

Villain(s)

• A cyclops and a minotaur (dream appearance)

Other Character(s)

• Harlequin Ellis (a television writer; no further appearances)
• Mike Friedrich (narrates this story; no further appearances)
• Two of Harlequin's assistants (no further appearances)

Comments:
Harlequin Ellis is based on writer Harlan Ellison.

Synopsis:
Writer Harlequin Ellis becomes enamored with Black Canary. However, she is already involved with Green Arrow. Distraught by emotional turmoil, Ellis begins writing stories. His stories are then brought to life in a dream world which pulls the real Green Arrow and Black Canary inside.

In the dreamworld, Ellis imagines himself as Superman and then Batman. However, each time his dream does not turn out as expected. In the real world, Black Canary seeks out Ellis and convinces him to stop. They part ways amicably.