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New York Times archive (nytimes.com/archives), 2026-10-08 (Investigator, STEP I)

Site: https://www.nytimes.com (archive abstracts; the full TimesMachine page images were not opened, as they need a login) Queries (Google, leading here): "Sinclair Tousey" obituary OR died OR biography; "Sinclair Tousey" X-ray radium Garden City 1937; site:nytimes.com "SINCLAIR TOUSEY, SPECIALIST, DEAD"; "Dr. Sinclair Tousey" radium OR "x-ray" 1904..1937. Result: positive.

  • Obituary, 26 Sept 1937, "SINCLAIR TOUSEY, SPECIALIST, DEAD; Garden City Physician One of First Here to Experiment With X-Ray Machines". Abstract: "Dr. Sinclair Tousey of Garden City, L. I., X-ray and radium specialist, died today after an illness of several weeks". He was "author of several books on X-ray and radium" and "had been a Summer resident here for many years. Six years ago he donated $5,000 worth of radium to the Morrison Hospital here." [web] https://www.nytimes.com/1937/09/26/archives/sinclair-tousey-specialist-dead-garden-city-physician-one-of-first.html . The dateline place is not shown in the abstract. The White Mountain Echo (1926) places him at Whitefield, N.H., and Morrison Hospital was in Whitefield, N.H. ([memory: medium]), so the obituary was probably datelined Whitefield. This sets the death date (about 25 Sept 1937) for the historical record.
  • 7 Jan 1914, "SUGGESTS TESTING TUBE OF RADIUM; Strength Can Be Determined Without Breaking the Seal, Says Dr. Tousey". Tousey, then of 850 Seventh Avenue, proposed laboratory tests of the radium tube owned by Dr. G. H. Earp-Thomas of Bloomfield, N.J. (radium said to come from Mme. Curie in 1900). The article says that "Several times he has ascertained the exact weight of shipments of radium salts made to him from France by tests that did not require their removal from the tube." [web] https://www.nytimes.com/1914/01/07/archives/suggests-testing-tube-of-radium-strength-can-be-determined-without.html . This bears on claim 5: in 1914 he was measuring radium output through the sealed container, the same task the Tousey unit (1913) was built for.
  • The same Google results also show NYT 30 July 1915 ("TOUSEY FOUND DEAD WITH GAS TURNED ON; Yonkers"): a Sinclair Tousey "at one time prominent as a publisher", of 596 Warburton Avenue, Yonkers. This is a different man (the publishing family). Recorded so that later steps do not confuse him with the physician.