17 In the Great Whirlpool; or, Frank Reade, Jr.’s Strange Adventures in a Submarine Boat.
18 Chased Across the Sahara; or, Frank Reade, Jr., After a Bedouin’s Captive.
19 Six Weeks in the Clouds; or, Frank Reade, Jr.’s Air-Ship the “Thunderbolt.”
20 Around the World Under Water; or, The Wonderful Cruise of a Submarine Boat.
21 The Mystic Brand; or, Frank Reade, Jr., and His Overland Stage.
22 Frank Reade, Jr.’s Electric Air Racer; or, Around the Globe in Thirty Days.
23 The Sunken Pirate; or, Frank Reade, Jr., in Search of a Treasure at the Bottom of the Sea.
24 Frank Reade, Jr.’s Magnetic Gun Carriage; or, Working for the U. S. Mail.
25 Frank Reade, Jr., and His Electric Ice Ship; or, Driven Adrift in the Frozen Sky.
26 Frank Reade, Jr.’s Electric Sea Engine; or, Hunting for a Sunken Diamond Mine.