Ralph Milne Farley 
The Radio Menace [EPUB ebook] 

When Boston’s U.S. Assistant District Attorney disappeared, not even the investigators knew that this was the opening gun of a weird and secret invasion of America. Trailing this disappearance, reporter Larry Larrabee finds himself pitted against amazing adversaries with strange scientific weapons and stranger, non-human allies: an overwhelming army of robots led by beast scientists from the planet Venus. One of the most beloved of the fantastic story pulp authors akin to Edgar Rice Burroughs, author Ralph Milne Farley pens another installment of his popular Radio series, The Radio Menace.