in L' Incredibile Devil (Editoriale Corno, 1970 series) #2 (21 Maggio 1970)
in Diabólico (Editora de Periódicos La Prensa S.C.L., 1966 series) #2 (31 de agosto de 1966)
in Marvel Super-Heroes (Marvel, 1967 series) #22 (September 1969)
in L' Incredibile Devil (Editoriale Corno, 1970 series) #2 (21 Maggio 1970)
in Daredevil l'homme sans peur (Editions Héritage, 1979 series) #1/2 (Juillet 1979) [in French, Daredevil's costume re-colored red; Original cover had Daredevil in his yellow/black costume]
in Marvel Masterworks (Marvel, 1987 series) #17 ([September] 1991)
in Marvel Masterworks: Daredevil (Marvel, 1999 series) #[1] (April 1999)
in Essential Daredevil (Marvel, 2002 series) #1 (October 2002) [black & white reprint]
in Diabolico (Novedades, 1981 series) #2
in Diabólico (Editora de Periódicos La Prensa S.C.L., 1966 series) #2 (31 de agosto de 1966)
in Marvel Super-Heroes (Marvel, 1967 series) #22 (September 1969)
in L' Incredibile Devil (Editoriale Corno, 1970 series) #2 (21 Maggio 1970)
in Atlanticserien (Atlantic Förlags AB, 1978 series) #2/1978 ([februari] 1978) [original title: The Evil Menace of Electro!], #2/1978 ([februari] 1978)
in Der unglaubliche Hulk (Condor, 1980 series) #2 ([Juli 1980])
in Marvel Masterworks (Marvel, 1987 series) #17 ([September] 1991)
in Marvel Masterworks: Daredevil (Marvel, 1999 series) #[1] (April 1999)
in Essential Daredevil (Marvel, 2002 series) #1 (October 2002) [black & white reprint]Electro last appeared in Amazing Spider-Man #9 (His 1st app.); Job number from Tom Lammers and Ger Apeldoorn via the Atlas/Timely discussion group.