The following is the monograph from which this feature was drawn:
Saturno, William A., Karl A. Taube, and David Stuart. 2005. The Murals of San Bartolo, El Petén, Guatemala, Part I: The North Wall. Ancient America 7. Barnardsville, N.C.: Center for Ancient American Studies.
You can order the monograph, which includes a 1:6 scale version of Heather Hurst's color rendering, online.