You might be able to get one from his wife. Gerald Larson has passed away but apparently she still has copies of the book. I believe they are $15 US plus shipping.
7841 W. Elmgrove Drive
Elmwood Park, lL 60707
The wife’s name is Georgia.
This is all I have. Sorry.
I may be able to get you one at the Lansing Michigan radio meet in July. I think they only work on US made radios as far as I know. I don’t have one but a friend of mine does.