| Publishing info incomplete. | 
          
            SIGN OF THE SPIRAL -- 1947, McLoughlin Bros; 1947, Grosset & Dunlap.
            THE TELLTALE SCAR  -- 1947, Grosset & Dunlap.
            THE CLUE OF THE CYPRESS STUMP -- illustrate by E.H. Kuhlhoff. 1948, Grosset & Dunlap; 1948, McLoughlin Bros.
            THE SECRET OF THE LOST MESA -- 1949, McLoughlin Bros; 1949, Grosset & Dunlap.
            THE HIDDEN STONE MYSTERY -- 1950, McLoughlin Bros; 1950, Grosset & Dunlap.
            THE SECRET OF THUNDER MOUNTAIN -- 1952, McLoughlin Bros; 1952, Grosset & Dunlap.
            THE INCA LUCK PIECE  -- 1955, McLoughlin Bros.
            MYSTERY OF THE TIMBER GIANT -- 1955, McLoughlin Bros. |