University of Pennsylvania Archives finding aid, 2026-10-08 (Investigator, STEP I)

Site: https://archives.upenn.edu/collections/finding-aid/upc4_11/ (School of Dental Medicine, Dental School Library Historical Collection). Found by Google query "Tousey, Sinclair" papers New-York Historical Society OR finding aid OR collection; the page was saved with curl (research/pages/upenn-upc4_11.html). Result: positive.

• The finding aid lists "Tousey, Sinclair, 1906-1920" at box 29, folder 40. It sits in the alphabetical run (Todd, T. Wingate ... Tousey ... Turner, Charles R.) of the series "Hellman, Milo: Medical, dental, and scientific writings (reprints) collection", which begins at box 25. [web]
• Milo Hellman (Penn Dental class of 1905) was a leading orthodontist and student of dental arch growth ([memory: high]). The Tousey folder therefore probably holds reprints of Tousey's dental papers from 1906-1920, likely including the dental-arch measurement papers (claim 4). That they were in an orthodontist-anthropologist's reprint file is itself a sign of professional attention.
• Not reached: the folder contents (need an archives request).