Volumes 14 and 15 of the Handbook of Middle American Indians, published in cooperation with the Middle American Research Institute of Tulane University under the general editorship of Robert Wauchope (1909–1979), constitute Parts 3 and 4 of the Guide to Ethnohistorical Sources. The Guide has been assembled under the volume editorship of the late Howard F. Cline, Director of the Hispanic Foundation in the Library of Congress, with Charles Gibson, John B. Glass, and H. B. Nicholson as associate volume editors. It covers geography and ethnogeography (Volume 12); sources in the European tradition (Volume 13); and sources in the native tradition: prose and pictorial materials, checklist of repositories, title and synonymy index, and annotated bibliography on native sources (Volumes 14 and 15). The present volumes contain the following studies on sources in the native tradition: “A Survey of Native Middle American Pictorial Manuscripts,” by John B. Glass “A Census of Native Middle American Pictorial Manuscripts,” by John B. Glass in collaboration with Donald Robertson “Techialoyan Manuscripts and Paintings, with a Catalog,” by Donald Robertson “A Census of Middle American Testerian Manuscripts,” by John B. Glass “A Catalog of Falsified Middle American Pictorial Manuscripts,” by John B. Glass “Prose Sources in the Native Historical Tradition,” by Charles Gibson and John B. Glass “A Checklist of Institutional Holdings of Middle American Manuscripts in the Native Historical Tradition,” by John B. Glass “The Botutini Collection,” by John B. Glass “Middle American Ethnohistory: An Overview” by H. B. Nicholson The Handbook of Middle American Indians was assembled and edited at the Middle American Research Institute of Tulane University with the assistance of grants from the National Science Foundation and under the sponsorship of the National Research Council Committee on Latin American Anthropology.