The online, open access U.S. History textbook The American Yawp doesn't mention conservatism until "Volume II, Chapter 29, titled "The Triumph of the Right." This chapter examines the rise of the conservative movement in the United States during the mid-20th century. It discusses the political mobilization of the American right following World War II, highlighting figures like William F. Buckley Jr., who in 1955 declared that his magazine,
National Review, “stands athwart history yelling Stop.” The chapter also addresses the political landscape of the 1960s and 1970s, including the challenges faced by the conservative movement and its eventual resurgence."
I ran that question through ChatGPT, i.e., "What is the first mention of conservatism in The American Yawp?
The American Yawp"