One popular book on Mexican modern Masters of the 20th century is "Mexican Modern Masters of the 20th Century: Rivera, Orozco, Siqueiros, and Others" by Antonio Rodriguez. This book provides an in-depth analysis of the works of iconic Mexican artists such as Diego Rivera, Jose Clemente Orozco, and David Alfaro Siqueiros, as well as other important figures in the Mexican modern art movement. It explores the cultural and political contexts in which these artists worked, as well as the impact of their work on Mexican and global art. With beautiful images and insightful commentary, this book is a must-read for anyone interested in Mexican modern art and its influential masters.