Short article on development of traveling post office for sorting letters en route and exchanging mail bags at speed; descriptive illustrations of equipment and exchange operations.
Travelling post office in service
Ry Gaz
Railway Gazette and Railway News ; 61 , n 18
1934
2 pages
Article (Journal)
English
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Engineering Index Backfile | 1929
|Centenary of Travelling Post Office
Engineering Index Backfile | 1938
Centenary of Travelling Post Office
Engineering Index Backfile | 1938