Hardcover textbook titled 'Elementary Statistics' by Janet T. Spence, John W. Cotton, Benton J. Underwood, and Carl P. Duncan

This textbook was part of the Century Psychology Series, a well-regarded academic publishing line that produced foundational texts in psychology and related fields during the mid-20th century. Published in the 1960s, it represents an era when statistics education was becoming increasingly important in social sciences and psychology programs across American universities. The book provided students with essential statistical methods for experimental research and data analysis. Vintage psychology and statistics textbooks from this period are sought after by collectors of academic history, educators interested in the evolution of statistical pedagogy, and bibliophiles who appreciate mid-century academic publishing. These books appeal to those fascinated by the history of psychology as a scientific discipline and the development of quantitative methods in social sciences. The Century Psychology Series is particularly valued for its role in shaping modern psychological education and research methodology.