The Young Wireless Operator—Afloat Or, How Roy Mercer Won His Spurs in the Merchant Marine

The Wireless Operator—With the U. S. Coast Guard

The Young Wireless Operator—As a Fire Patrol Or, The Story of a Young Wireless Amateur Who Made Good as a Fire Patrol

The Young Wireless Operator—With the Oyster Fleet How Alec Cunningham Won His Way to the Top in the Oyster Business