ALS, written at the bottom of a one-page letter to Goldberg, 8.5 x 11, dated February 24, 1970. Letter to a woman asking where his art can be purchased. In part: “My sculptures can be seen at the Hammer Gallery…N.Y. City ask for Mr. Mitchell—prices run from $500 to $5000.” In fine condition, with intersecting folds, one through a single letter of signature, and scattered light toning. RRAuction COA.