2026-10-04 Library of Congress, via Chrome

Irving Langmuir papers, 1871-1957, LCCN mm77029413 [web] https://www.loc.gov/item/mm77029413/ A Cloudflare check passed on its own with no interaction. - 32,000 items, 107 containers plus 4 oversize, 42.6 linear feet; open to research; Manuscript Division. - Series 4: Laboratory Notebooks, 1894-1957; Series 5: Experimental Sheets, 1902-1954; Series 2: Correspondence, 1895-1957; Series 6: Article and Speech File, 1898-1956. These would hold the 1924-1929 GE Research Laboratory notebooks on the Hg-arc scattering and oscillation experiments. - The summary centres on GE Research Laboratory work; plasma work is not named in the subject headings. - Finding aid: http://hdl.loc.gov/loc.mss/eadmss.ms012160 (not opened; next run: search it for "Tonks", "oscillation", "plasma", "scattering", 1925-1929 notebook numbers). Bearing: priority 1 and 4 (lab notes behind the 1929 experiments, e.g. the 1.38 MHz tuned-amplifier check and the two-state arc).