Re: Landsmanschaft societies in New York #usa
Records of landsmanshaftn are kept at YIVO and AJHS which are located at Center for Jewish History. To find if your society has records check JGS of NY website https://jgsny.org/searchable-databases/indexes-to-jewish-organizations/yivo-landsmanshaftn-collection
The lecture about which you refer, I believe, was mine. I have been presenting on the topic of landsmanshaftn at IAJGS conferences for many years, have given webinars (one recently for JewishGen) and have written a number of articles on the subject in Avotaynu. Feel free to contact me for more assistance.
Kiryat Yearim (Telz-Stone) ISRAEL
Researching: KRAUS, GOTTFRIED, MONAT from PRZEMYSL (Galicia) Poland/ KINSTLICH, GREENBERG, SCHMIDT from Tarnobrzeg, Rozwadow, Ulanow (Galicia) Poland
KLOTZ from Telsiai, Lithuania/ ROGOZIN, KAPLOWITZ, from Vyazyn, Ilya, Vilyayka, Belarus /LAPIDUS, SOKOLSKY, ROGOZIN, Maladzyechna, Belarus