THE MYSTERY HUNTERS AT THE HAUNTED
LODGE -- 1934. A.L. Burt; Saalfield.
THE MYSTERY HUNTERS AT LAKESIDE
CAMP -- 1934. A.L. Burt.
THE MYSTERY HUNTERS AT OLD
FRONTIER -- "The Mystery Hunters become students at Frontier
College in New York and investigate a nearby abandoned hospital rumored
to be haunted." -- 1934. A.L. Burt; Saalfield.
THE MYSTERY HUNTERS ON SPECIAL
DETAIL -- 1936. A.L. Burt; Saalfield.