It's opening day of Collectors' Reserve: American Art Exhibition and Sale at Gilcrease Museum. The show features more than 60 artists, each offering up to three pieces of their best works for sale. The sale will take place the evening of November 4. Art sold during the Art Sale will be removed from the galleries. Remaining works will be on display through Sunday, November 7 and online through November 14 and may be purchased through the Museum Store, (918) 596-2725.