The responses of historical readers and their engagement in print culture remains a mystery in literary study. By recovering readers' letters to the editor in magazine culture, my dissertation recovers readers' efforts to evaluate and critique art, and thereby participate in the formation of taste. I argue that the social and cultural consequences of twentieth century literature cannot be fully understood without also considering the imbricated relationships of authors, editors, and readers within serialized print culture. I develop a hybrid methodology that draws from distant and close reading practices to explain readers' reactions to cultural production and to model the infectiousness of ideas within literature. This method makes a new intervention in literary debates about aesthetics and politics by ascertaining the ways readers evaluated style and, in doing so, energized literary taste with social, cultural, and political valences. Drawing from interdisciplinary fields, such as social and data sciences, I examine the roles of these letters from various magazines, such as the NAACP's The Crisis, the avant-garde Little Review, the more broadly read Poetry, and the socialist magazine, The Masses. The interactions between readers, editors, and authors provide historical parallels to our contemporary moment in which ideologies circulate and compete online.