| Title | Type | Date | Platform | Names | Characters |
|---|---|---|---|---|---|
| Nihongo Notes 1: Speaking and Living in Japan | Book | 1977-12 | Nobuko Mizutani, Osamu Mizutani, The Japan Times, Ltd. | ||
| Nihongo Notes 2: Expressing Oneself in Japanese | Book | 1979-04 | Nobuko Mizutani, Osamu Mizutani, The Japan Times, Ltd. | ||
| Nihongo Notes 3: Understanding Japanese Usage | Book | 1980-09 | Nobuko Mizutani, Osamu Mizutani, The Japan Times, Ltd. | ||
| Nihongo Notes 4: Understanding Communication in Japanese | Book | 1981-12 | Nobuko Mizutani, Osamu Mizutani, The Japan Times, Ltd. |