Look at American Radio Relay League and Radio Society of Great Britain websites for publications. There are also many others aimed at radio amateurs. I am not sure what you mean by 'solid.' It's safe to say that the books aimed at radio amateurs will be somewhat different than a book written for an RF engineer. Many of the amateur books that I have do tie in well with other publications even though they can stand alone. I understand that many design professionals do use these books.