Article “Learning to Fly 1904-1927,” a biography of Edwin Link.

Ocean Science News article “Edwin A. Link Has Now Completed His Special Job” regarding Link’s planned research with SPID.

Science article “Hyperbaric Exposure of Mice to Pressures” describing that use of helium-oxygen with mice has good results, National Geographic article “Tomorrow on the Deep Frontier” regarding our exciting future undersea, and foreword of Training by Simulation with a picture of Edwin Link and astronaut Alan Shepard.

School Life article “Oceanography: New Vistas and Opportunities” calling for more marine education.

Saturday Evening Post article “Room at the Bottom of the Sea” describing that Sealab divers prepare to go deeper, Le Patriote Illustre magazine article “Sous la tente, au fond des mers” describing a diary of Robert Stenuit's underwater stay from Sea Diver.

Spanish articles “los días más profundos,” and “El diario mundo submarino” regarding Robert Stenuit's dive, and National Geographic article “What's the World Coming to!” regarding Edwin Link’s undersea research.

L'aventure Sous-Marine: techniques et exploration article “Helium – L’aventure sous-marine” regarding experiments of Link-Stenuit and Sealab I.

True magazine article “Explorer of the Underwater Frontier” regarding Edwin Link’s undersea explorations.

Contributions of the Florida State Museum article “A 1715 Spanish Treasure Ship,” which is used for Marion Link’s Spanish camp article.

National Geographic article “Outpost under the Ocean,” proof pages for articles about SPID.