A Jewish marriages list can be found at: http://www.hebrewsurnames.com/marriage_records_BERG. It was compiled using the burial records of Buenos Aires Jewish cemeteries.
On the same site at:
http://www.hebrewsurnames.com/ships, a list of ships and their passengers that arrived in Buenos Aires (1882-1960)
http://www.hebrewsurnames.com/jewish_colonies, Census records of the Jewish colonies in Argentina
http://www.hebrewsurnames.com/buscar_avisos.php Obituaries-- searchable by date or by using a search box
http://www.hebrewsurnames.com/jewish_burial_records ( 1910-2013) Burial Records-- must use the search box
http://www.hebrewsurnames.com/ashkenazi-sephardi The mixed Ashkenazic/Sephardic families list of names found in cemeteries
http://www.hebrewsurnames.com/passenger_records_search Immigration records (1882-1950), using a search box