Johnny Galaxia's Publishing History 1
United Kingdom
Space Ace based on Selecciones Ilustradas work was published in Lone Star Magazine (Atlas Publishing, England) from 1961 and Space Ace (Atlas Publishing, England) from issue 14 in September 1961 until these series ended in 1963.1
Johnny Galaxia was periodically published in the UK as a backup feature in L. Miller & Son's Marvelman comics, probably from Marvelman 362, June 1962, and Young Marvelman 362, June 1962 until those titles ended in February 1963.2 The feature also appeared in later Marvelman annuals.3
Mystic 66, 1966, (L. Miller & Son, England) also included a Johnny Galaxy story. L. Miller & Son ceased publication in 1966 and their assets were aquired by Alan Class.4
Spain
There have been multiple Spanish printings of Johnny Galaxia. At least one issue of anthology series Chiribin (Editorial Bruguera, Spain)5 and Serie Discolor/La Hora Feliz (Publicaciones Infantiles Salvatella, Spain)6 focused on Johnny Galaxia. Stories also appeared as a backup in El Gigante de la Historieta, Serie Amarilla and Serie Azul (Ediciones Manhattan, Spain).7
Other Spanish versions appeared in Fulgor (Ediciones Toray, Spain)8 in 1960-1962, Delta 99 (Ibero Mundial de Ediciones, Spain)9 in 1971, Comics (Ursus, Spain)10 in 1972, and Python (Ibero Mundial de Ediciones, Spain)11 in 1972. The artwork in the Delta 99 reprint was reformatted to a digest size.
Chile
There was also a spanish language version in Chile published as a backup in 5 x Infinito (Zig-Zag/Revista Editada, Chile) in issues 1 to 22.12