The idea of publishing a book on Tai and Mon-Khmer phonetics and phnonology in honor of Professor Eugénie J.A. Henderson was first proposed by Jimmy G. Harris when he visited the Indigenous Languages of Thailand Research Project, Central Institute of English Language in September 1977.  Responsibility for publication was ultimately shouldered by Professors Theraphan L. Thongkum, Pranee Kullavanijaya, and Vichin Panupong of the Department of Linguistics, Chulalongkorn University, with funding provided by the Ford Foundation.

This book is copyright 1979 by the Department of Linguistics, Faculty of Arts, Chulalongkorn University, and is believed to be out of print.