A prologue to the 1967 ACTFL Bibliography (American Council on the Teaching o f Foreign Languages), this bibliography contains items published between 1920 and 1966 and a few very important documents of earlier date. It is designed for use by researchers, methods teachers, supervisors, and classroom teachers, and includes articles, studies, research reports, monographs, books, and bibliographical sources. All listings are classified by section, level (e.g., secondary, graduate), and language. Sections are (1) festschriften, (2) linguistics, (3) physiology and psychology of language learning, (4) analysis and teaching of cultural and cross-cultural context, (5) teaching foreign literature, (6) curricular problems and developments, (7) teacher education and qualifications, (8) materials and equipment, (9) methods, and (10) testing. Curriculum guides and other classroom resources, adequately covered elsewhere, are not included. An author index, compiled subsequently, is appended to the bibliography. (AF)