The complete version in .pdf format, which will live forever! It has both the original images and the text should be searchable.
If you always wondered how a tube based regenerative radio receiver works, this is the book for you!
A braille version was printed – the “Ham” in Illinois who sparked my resumed interest has a braille copy that was printed at the request of the Library of Congress by the American Printing House for the Blind in Louisville, Kentucky. This is not the braille version.
According to my cousin, “back in the day” he received so many letters from blind youngsters who had read the book that he had to give up replying to them as the burden was getting too big – so there may be some 60-80 year old “hams” showing up looking for this book.