Check out this great resource of scientific and engineering articles written for kids between 1916 and 1981! The covers are fascinating! They were printed by the manufacturers of the Mechanno building sets, which are known as Erector sets here in the States. Each issue contains articles about interesting technologies of the time and the future of technology as the authors saw it then.
The early motto of the magazine is my favorite:
"To Help Meccano Boys to Have More Fun Than Other Boys"