 The Izaak Walton League, a conservation group formed in 1922, that sought the complete abolishment of livestock grazing on national forest lands in the 1930s.The League's Los Angeles chapter petitioned Region 5 of the Forest Service to immediately and absolutely abolish all grazing permits of both sheep and cattle from California's national forest lands.The League's position was that sheep grazing was a costly mistake and a man-made hazard to forests and watersheds, that cattle grazing had been too heavy and that both types of livestock hindered wildlife.