The Esther A. & Joseph Klingenstein Fund is a family foundation that was founded in 1946. Its grants fall chiefly into two program areas: basic research in neuroscience and independent school education. The Klingenstein Third Generation Foundation was established in 1993 through a capital grant from the Esther A. and Joseph Klingenstein Fund. The six trustees of the Klingenstein Third Generation Foundation are the grandchildren of Esther A. & Joseph Klingenstein. Joseph Klingenstein was a founding partner of Wertheim & Company.