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| Label: | Sun Record Company S1#1111 |
| Genre: | Folk, World, & Country |
| Format: | Vinyl (7") |
| A1 | Rock Island Line | |
| B1 | Next In Line |
| Label: | Sun Record Company SUN-1111 |
| Genre: | Folk, World, & Country |
| Style: | Country |
| Format: | Vinyl (7" , Single , 45 RPM , Reissue) |
| A | Rock Island Line » Written-By: Johnny Cash | 2:04 |
| B | Next In Line » Written-By: Johnny Cash |
| Label: | Sun Record Company SI-1111 |
| Genre: | Folk, World, & Country |
| Style: | Country |
| Format: | Vinyl (7" , 45 RPM) |
| A | Rock Island Line | 2:04 |
| B | Next In Line | 2:37 |
| Label: | Sun Record Company SUN-1111 |
| Genre: | Folk, World, & Country |
| Style: | Country |
| Format: | Vinyl (7" , Single , 45 RPM , Reissue , Promo) |
| A | Rock Island Line » Written-By: Johnny Cash | 2:04 |
| B | Next In Line » Written-By: Johnny Cash |