Vicki Lawrence was not in this episode.
The "State Fair" parody cleverly parallels the Rodgers and Hammerstein musical, including the spiked mincemeat, the homespun heroine's affair with a womanizing reporter, and musical equivalents of "Our State Fair," "It Might as Well Be Spring" (replete with multiple reprises) and, from "Oklahoma!", "Oh, What a Beautiful Mornin'" and "People Will Say We're in Love."