Column "For Your Information" by ***** Ley in Galaxy magazine, published in August 1962, included in the collection "***** Ley's For Your Information: On Earth and in the Sky" (1967), about the 'Wheels of Poseidon', plankton-patterns of acoustic pressure waves in the Indian Ocean and the Persian Gulf

Story "A Meeting with Medusa" - § 5. The Wheels of Poseidon (1971, Arthur C. Clarke)

Collection "Held/True"

Short story "The Sentinel" (1951, Arthur C. Clarke)

Collection "Human excess"

Short story "The Sentinel" (1951, Arthur C. Clarke)

Collection "Human excess"

Short story "The Ultimate Melody" (1957, Arthur C. Clarke)

Collection "Human excess"

Comment in a letter from Konstantin Tsiolkovsky from 1911: "Planyeta yest' kolybyel razuma, no nyelzya vyechno zhit' v kolybyeli" ("The planet is the cradle of the mind, but you cannot live in the cradle forever" >> "Earth is the cradle of humanity, but one cannot live in a cradle forever [The solar system becomes our kindergarten]")

**** sapiens has been around for 300,000 years

Collection "Human excess"

Composition "Dreamleaves" / "Traumblätter" (2007, Robert Nasveld), for one piano four hands, performed by Corien van den Berg and Niek de Vente, in the Organpark on May 31st, 2024 - 6. "Dé-jà-entendu dream"

Collection "org anp ARK" #13

Composition "Dreamleaves" / "Traumblätter" (2007, Robert Nasveld), for one piano four hands, performed by Corien van den Berg and Niek de Vente, in the Organpark on May 31st, 2024 - 1. "Falling asleep restlessly", 3. "Dream of the girl at the spinning wheel"

Collection "org anp ARK" #12