Bottom of cover notes return of Herbie: "He's back again! Herbie Popnecker, the world's strangest boy, tackles the supernatural, in... 'Herbie and the Spirits!'"
in Herbie (American Comics Group, 1964 series) #17 (April-May 1966)
in Herbie (A-Plus Comics, 1990 series) #1 (January 1991)
in Herbie Archives (Dark Horse, 2008 series) #1 (August 2008)Herbie looks and talks differently in this pre-Herbie series story. In this story, Herbie's pants are brown; in all other original stories, they were blue. The being called Frankenstein is really Frankenstein's Monster, but is called Frankenstein throughout the Herbie stories.
from Adventures into the Unknown (American Comics Group, 1948 series) #77 (October 1956)