| Title: | Additional Postal Convention between Great Britain and Spain - additional to the Postal Convention of 21 May 1858 |
| Subject: | POSTAL |
| Relation: | PRO (now TNA) FO.93/099/142/0: 0||none |
| Relation: | British State Papers (BSP) 66 / 542/0: 0||none |
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| Open Document File |
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