WorldRadioHistory.com, Archive-AIEE (Journal of the AIEE scans), 2026-10-08

Found via Google (query: Steinmetz "third class conductor" ...). Scripted download needed a browser user-agent; with it the PDFs downloaded (18 MB each). Not kept in files/ (too large, only a listing); text extracts are in research/pages/jaiee-1923-04/05/06.txt.

Found [web: https://www.worldradiohistory.com/Archive-AIEE/Journal-Of-The-AIEE-1923-04.pdf]

• Journal of the AIEE, vol. XLII no. 4, April 1923, convention program, Tuesday evening technical session: "5. Third Class Conductors and Mechanism of Arcing Ground, by C. P. Steinmetz, Fellow A. I. E. E., Chief Consulting Engineer, General Electric Co." followed by "6. Surges on Transmission Lines, by J. Slepian ... and J. F. Peters ... Westinghouse". So the 1923 paper was presented in the same session as Slepian and Peters' surge paper (a Westinghouse view of the same phenomena; lead for related work).
• May and June 1923 issues: no "third class conductor" text found by grep; they carry operating-practice discussion of arcing grounds and of the "arcing ground suppressors of Creighton" (E. E. F. Creighton, GE) [web, jaiee-1923-05.txt line ~4543], and on grounded versus isolated neutrals (June 1923). These are the industry's practical response to the phenomenon of claims 1-2 (grounding the neutral to stop arcing grounds), a lead for the historical record.
• Google also showed a Journal of the AIEE October 1930 hit citing the 1923 Steinmetz paper ("Frequency Conversion by Third Class Conductor ... A. I. E. E. TRANS., 1923, Vol. 42, p. 470") and Gilkeson, "Overvoltages on Transmission Lines" (1933), quoting the abstract; not opened. A GE Review scan hit mentions "Multigap Lightning Arresters" and rain drops (not opened).

Result: positive (program listing; later citations to follow).