| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| English Usage Drills and Exercises: Programmed for the Typewriter | 978-0-07-007485-9 | 1977 | E. Leffingwell |
| Punctuation Drills and Exercises | 978-0-07-007478-1 | 1978 | D. Near |
| Punctuation Drills and Exercises | 978-0-07-007479-8 | 1978 | |
| Spelling Drills and Exercises Programed for the Typewriter | 978-0-07-007475-0 | 1979 | D. Near |
| Spelling Drills and Exercises Programmed for the Typewriter | 978-0-07-007491-0 | 1979 | " |