YIVO Archives and Library Collections has a collection of Landsmanschaft records. When completing my JOWBR project for the Soloker Benevolent Society at Beth David Cemetery (Elmont, NY) and Mt. Zion (Maspeth, NY) I visited YIVO (15 West 16th Street, NY, NY). An online search describes the contents of the Soloker records (Description: Certificate of incorporation, 1904. Cemetery deeds, 1976-1987 Meeting minutes, Correspondence, 1960-1992, Financial Records, 1949-1990, Miscellaneous, 1979-1987) All of this was located in a box which I was able to inspect on site. You can search the archives (http://yivoarchives.org/) for your society.
Jewish Genealogical Society of Greater Miami
GAMBURG - Salakas Lithuania, Dnipro Ukraine, Brooklyn New York
GAMUS - Dizna Belarus
SHAPIR - Salakas Lithuania
PITTEL - Salakas Lithuania
LEVIN - Salakas Lithuania