Journey Into Unknown Worlds #49
Title: “Trouble Bubble”
Medium: prose text story
Cover date: Sep. 1956
Publisher:
Reprints of this prose text story:
Strange Tales (vol. 1) #78 (Nov. 1960): "Trouble Bubble"
Tales of Suspense (vol. 1) #30 (June 1962): "Trouble Bubble"
Tales to Astonish (vol. 1) #2 (Mar. 1959): "Trouble Bubble"
World of Fantasy #10 (Feb. 1958): "The Amazing Bubble"
World of Suspense #10 (Feb. 1958): "The Amazing Bubble"