True to a certain point Muddy, Riverside was incorporated to the PRADCO conglomerate to which Fred Arbogast, Excalibur, YUM, Heddon, Rebel, Cotton Cordell, Creek Chub, Booyah, Smithwick, Silver Thread, Bomber & lazy Ike belong.
Actually nowdays the Riverside brand has been dissapeared from the face of the planet. The Riverside site still exists, you click on it and it links you to Lurenet but the catalog shows nothing.