#美国夏日时光# 1911年，J.K.丹尼尔斯第一次在博览会上用黄油雕塑了一头牛，之后，佛罗里达的J.E.华莱士接手了他的工作。爱荷华州博览会有着用黄油进行雕塑创作的悠久历史。每年，博览会上的雕塑家用无盐黄油创造出一个小男孩一边给奶牛挤奶，一边跟一位女士打招呼的生动形象。自1920年代以来，这一直是该博览会的非官方吉祥物。爱荷华州托莱多的诺玛“达菲”里昂于1960年开始从事雕刻，并成为为该博览会进行雕塑创作第四人，也是第一位女性。2006年，在跟随达菲学徒15年后，韦斯特·德梅因的莎拉·普拉特成为了该博览会的第五位黄油雕塑家。

In 1911, J.K. Daniels sculpted the Fair's firstbutter cow and was succeeded by J.E. Wallace of Florida. In Butter sculptinghas a long history at the Iowa State Fair. Every year, using unsalted butter,the fair’s sculptor creates a depiction of a cow being milked by a boy who iswaving to a woman. This has been an unofficial mascot of the fair since the1920s. Norma “Duffy” Lyon of Toledo, Iowa, began sculpting in 1960, andbecame the fourth person and first woman to sculpt for the fair beauties. In2006, after 15 years of apprenticing with Duffy, Sarah Pratt of West Des Moinesbecame the Fair's fifth butter sculptor.