Blue Letter
| MPAA Rating: | NR |
| Genre: | Drama, Romance |
| Produced By: | Ki-Dong Woo |
| Directed By: | Jin-Woo Jeong |
| Written By: | Jin-Woo Jeong |
| Cast: | Jeong-Sun Hwang, Hyeon-Shil Tae, Hun Yang, Jeong-Hie Yun, Sung-Il Shin |
| In Theaters: | Jun 27, 1968 |
| Runtime: | 1 hour 45 minutes |
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