Sam Sedgman

The Highland Falcon Thief

M. G. Leonard, Sam Sedgman, et al.

Murder on the Safari Star

M. G. Leonard, Sam Sedgman, et al.

Kidnap on the California Comet

M. G. Leonard, Sam Sedgman, et al.

Danger at Dead Man's Pass

M. G. Leonard, Sam Sedgman, et al.

Sabotage on the Solar Express

M. G. Leonard i Sam Sedgman