I'm aware of the original hard cover versions and
the Dover paper back
reprints.(not sure if Dover reprinted all the originals but they did quite a
few) Are there other editions? I have several of the Dover reprints.
I think they are sold thru Antique Radio Classified (ARC) - they are not
hard to get - well, maybe getting a complete set of originals is a
challenge.
I have most of them, and frankly, the best one is the Components book
(#17). The mugshots of the different vendors' resistors, wire, coils, and
such, is information that can't be found anywhere else in such compact
form.
William Donzelli
aw288(a)osfn.org