1941 Dutton 480 Universal Speedwords. (Second edition). 1942 Dutton 480 Universal Speedwords. (Third edition). 1943 Dutton World Youth Speedwords with an introduction by C.E.M. Joad 1943 (June) Dutton Double-Speed Words (first edition) with a Foreword by Dr. C E M Joad and an open letter to the young people of all nations from the inventor of World Double-Speed Words 1943 (June) Dutton Double-Speed Words Companion to text-book (first edition) 1944 Dutton Double-Speed Words (second edition) with a Foreword by Dr. C E M Joad and an open letter to the young people of all nations from the inventor of World Double-Speed Words 1945 Dutton Speedwords Dictionary. London : Dutton Publications. 1945 (May) Dutton Double-Speed Words Companion to text-book (second edition). London : Dutton Publications. 1945 (June) Dutton speedwords dictionary (Third edition). London : Dutton Publications. 1946 (July) Dutton Double-Speed Words (third edition) with a Foreword by Dr. C E M Joad and an open letter to the young people of all nations from the inventor of World Double-Speed Words with comments by the Dean of Canterbury, Professor Lancelot Higben, Dr. Frederick Bodmer, and Eric Partidge 1946 (July) Dutton Double-Speed Words Companion to text-book (third edition). London : Dutton Publications. 1946 World speedwords. London : Dutton Publications. 1946 Supplement to the Dutton World Double-Speed Words text-book. London : Dutton Publications. 1946 100 Speedwords with 20 exercises. London : Dutton Publications. 1946 Dictation Exercises on the Thousand most Used Words. London : Dutton Publications. 1951 Dutton Speedwords Dictionary (Fourth edition) 1951 Teach Yourself Dutton Speedwords published in the English Universities Press Teach Yourself series a publisher which specializes in self-instruction books 1951 Common market speedwords (4th edition) [Not listed in any library holding but listed in the 1951 edition of Teach Yourself Speedwords] 1959 Reprint of the 1951 edition of Teach Yourself Dutton Speedwords 1962 Reprint of the 1951 edition of Teach Yourself Dutton Speedwords 1971 Revised edition of Teach Yourself Dutton Speedwords published in the English Universities Press Teach Yourself series 1973 Reprint of the 1971 edition of Teach Yourself Dutton Speedwords Size of Speedwords vocabulary Dutton variously suggests the size of the Speedwords vocabulary ranges from 493 to 10,000: 493 Speedwords. These are Speedword stems or elements (TYDS, page 88, 89, 137). 1,000 Speedwords. These are the most frequently used words (TYDS, page 141). 4,000 Speedwords. These are the words in the Speedwords Dictionary (TYDS, page 87). 10,000 Speedwords. These