Art dealer Sam Salz died in 1981, leaving most of his estate and art collection with works by the likes of Monet and Degas to his two sons, Marc and Andre Salz. Salz had represented America’s richest collectors including Paul Mellon, Henry Ford 2d, and David Rockefeller, reports the NY Post.

The brothers allege that Pierre-Auguste Renoir’s “Still Life with Figs,” Claude Monet’s “La Seine a Argenteuil” and Edgar Degas’ “Horses in a Meadow,” were quietly sold in private sales by their stepmom, Janet Traeger-Salz — who died last year at age 99.

The Degas went to the National Gallery of Art in Washington, DC, for an undisclosed sum. Other works are requiring more research to track down as the brothers bring a case against their stepmom's estate for the missing tens of millions worth of artwork.