Shadow - Go Mad!, by Maxwell Grant (Belmont, 1966).From eBay.
The Shadow’s Revenge, by Maxwell Grant (Belmont, 1965).From
The Night Of The Shadow, by Maxwell Grant (Belmont, 1966).From
The Shadow Strikes, by Maxwell Grant (Belmont, 1964).From eBay.
Grove Of Doom, by Walter Gibson (alias Maxwell Grant) (Tempo
The Death Tower, by Maxwell Grant (Bantam, 1969). Cover painting