| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Basic Keyboarding/Typewriting Drills/T15 | 978-0-538-20150-6 | 1987 | |
| Century 21 typewriting | 978-0-538-20814-7 | 1977 | |
| Century 21 typewriting Lessenberry ... | 978-0-538-20723-2 | 1973 | |
| College Keyboarding/Typewriting: Basic Course/With Self-Paced Learning Activity Guide | 978-0-538-20310-4 | 1986 | Charles H. Duncan · S. Elvon Warner · Susie Vanhuss |
E. L. · T.E. Langford · T. Langford · Thomas E. · Thomas L. · Thomas Langford