Triple Spies (Boys Mystery Series, Book 1) 7+

📕 Roy J. Snell (1878-1959) authored at least 85 Young Adult novels under his own name and as by David O'Hara, James Craig, and Joseph Marino, most of them specifically directed to boys, though he wrote at least one series of mysteries for girls. His tales for younger children, beginning with Little White Fox and his Arctic Friends (1916), are animal fantasies.This series consists of: Triple Spies Lost in the Air Panther Eye Crimson Flash White Fire Black Schooner Hidden Trail The Firebug Red Lure Forbidden Cargoes Johnny Longbow The Rope of Gold Arrow of Fire Riddle of the Storm The Galloping Ghost Whispers at Dawn Mystery Wings Red Dynamite The Shadow Passes Sign of the Green Arrow