The Photocopy Reproductions of Correspondence, Diaries, Notes, and Related Documents Between Sir Hubert Wilkins, Harold Sherman, Martha Sherman, and Suzanne Wilkins as Collected by Saskia Praamsma Raevouri contains photocopied reproductions of correspondence between Sir Hubert Wilkins, Harold Sherman, and their wives, Martha Sherman and Suzanne Wilkins, on the subject of extrasensory perception; the photocopies date from August 2014, while the original materials reproduced in this collection date from 1931 to 1981.

Saskia Praamsma Raevouri collected, compiled, and photocopied these items as research for books she was writing, including The Urantia Diaries of Harold and Martha Sherman and The Urantia Notebook of Sir Hubert Wilkins: Fact Finder and Truth Seeker.

The George Hubert Wilkins Collection contains a handwritten letter written to R. J. Blindell, owner of R. J. Blindell, Limited; the company that provided footwear to the Wilkins-Ellsworth Trans Arctic Submarine Expedition. The 1931 letter was written on R. J. Blindell, Limited stationary, and describes how helpful the Blindell footwear was to the expedition; it is signed "The North Pole Hikers." Also included is the mailing envelope for this letter, which was stamped with a Wilkins-Ellsworth Trans Arctic Submarine Expedition postal cachet.

The back side of the letter was reused by R. J. Blindell to write an additional letter on December 8, 1942; this letter is addressed to Edwin Garrett, and describes the stamp and postal cachet on the envelope from the original letter.

Australian National Antarctic Research Expeditions (ANARE) Club Sir Hubert Wilkins 85th Anniversary Commemorative Postal Cover are three envelopes and a brochure commemorating Wilkins’s landing in the Australian Antarctic Territory. The numbered envelopes contain a stamp from Davis Station, a picture of Sir Hubert Wilkins posing under a painting of himself, and a postage stamp with a picture of the Walkabout Rocks. The envelopes include a card with details about the limited edition envelopes stamped at Davis Station, Antacrtica and a signature from the ANARE Club president. The set of envelopes in this collection is numbered nineteen out of thirty. The envelopes are dated January 8-11, 2024. A brochure included with the envelopes contains excerpts from logs and reports from Wilkins’s landing in Australian Antarctic Territory on January 8-11, 1939.