"River of Mail" is a nine-minute video produced by the Post Office Department in the late 1960s to teach the public about mail processing methods used during the 1960s and early 1970s.River of Mail - YouTube | |
| 7 Likes | 7 Dislikes |
| 2,222 views views | 2,433 followers |
| Education | Upload TimePublished on 2 Nov 2011 |
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