In the late 1930s several prominent self-described patriotic groups attacked social studies pioneer Harold Rugg as "un-American." The largest instance of textbook censorship in American history unfolded. Yet little attention was given (and continues to be given by scholars) to Rugg's elementary textbooks that he wrote with Louise Krueger. This article examines Rugg and Krueger's complete "Elementary Series" in light of the un-American criticisms levied at Rugg. It documents how, despite critics' claims, the books were immediately celebratory of the United States and its people, teaching a traditional patriotism that casts the nation as the supreme level of social analysis through an unquestioning, best-story approach. Furthermore, it shows how the books lack Rugg's justice-oriented philosophy of the "American Problem." The article concludes by charging elementary social studies teachers, teacher educators, and researchers to consider critical questions related to the teaching of patriotism in the elementary grades.