Rare rock dove decoy by John E. Olson, Elgin, Illinois. This well-carved and painted pigeon decoy has applied wings and tiny tack eyes. There is some paint loss at the wing shoulders, otherwise in very good condition. The initials ''J. E. O.'' are marked on bottom. 7-1/2''h, 3'', 11''l. Provenance: Estate of Joseph ''Jay'' St. Mark, PhD, of Newtown, Connecticut, historian, appraiser, and collector of fine Americana.