Walnuts. Marketing agreement for packers of walnuts grown in California, Oregon, and Washington, executed by Secretary of Agriculture, Oct. 7, 1933. effective Oct. 9, 1933, with amendments to marketing agreement for packers of walnuts grown in California, Oregon, and Washington, amendments approved by Secretary of Agriculture, Aug. 25, 1934. effective Aug. 27, 1934; Amended license for packers of walnuts grown in California, Oregon, and Washington, issued by Secretary of Agriculture, Aug. 25, 1934.