E-text prepared by Carl D. DuBois
| Transcriber's note: |
| The Table of Contents and the List of Illustrations were added by the trascriber. The text refers to 76 photographic "PLATES," but the source copy contained only the first. Two of the illustrations were labeled "FIG. 26;" I have labeled them FIG. 26A and FIG. 26B. |
[Frontispiece:] TRIBAL MAP OF DAVAO DISTRICT"