Lot of 6 1950s and 1960s vintage Electronic Experimenter's Handbook from Popular Electronics magazine. They are full of tons of fun, do-it-yourself electronics projects with lot of photos, illustrations, circuit diagrams and much more!
There are: 1958, 1959, 1960, 1961, 1962 and 1963.
These are all from the estate of an electrical engineer and short-wave radio buff. They have wear and age. The 1963 edition is missing part of the back cover.