In this gallery:

Four Color #928

“Dynamite Cove” illustrated by possibly either Warren Tufts or Dan Spiegle

“Ghost Island” possibly illustrated by Dan Spiegle

In this gallery:

Four Color #994

“Treasure Reef” illustrated by Dan Spiegle

“Danger Dive” illustrated by Dan Spiegle

In this gallery:

Four Color #1041

“Valley of the Amazon” written by Erich Friewald and Robert Schaefer and illustrated by Alex Toth

“Test Dive” written by Erich Friewald and Robert Schaefer and illustrated by Alex Toth

In this gallery:

Sea Hunt #4

“Marked for Disaster” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

“Shark Surf” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

In this gallery:

Sea Hunt #5

“Underwater Eye” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

“Emergency Train” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

In this gallery:

Sea Hunt #6

“Treasure of the Mayas” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

“Underwater City” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

In this gallery:

Sea Hunt #7

“Jackpot Dive” written by Erich Friewald and Robert Schaefer and illustrated by Dan Spiegle

“Sky Drop” written by Erich Friewald and Robert Schaefer and illustrated by Dan Spiegle

In this gallery:

Sea Hunt #8

“Treasure From the Past” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

“The Balboa Bandits” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

In this gallery:

Sea Hunt #9

“Underwater Cover-Up” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

“Suspicious Waters” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

In this gallery:

Sea Hunt #10

“Pirates’ Holiday” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

“Marked for Vengeance” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

In this gallery:

Sea Hunt #11

“Canyon Danger” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

“Davey Jones’s Ledger” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

In this gallery:

Sea Hunt #12

“Escape by Night” written by Erich Friewald and Robert Schaefer and illustrated by Russ Manning

“The Silent Witness” written by Erich Friewald and Robert Schaefer and illustrated by Dan Spiegle