Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:post_office
|
| gptkbp:beganIn |
early 20th century
|
| gptkbp:declined_due_to |
improved surface transport
integration with regular mail services |
| gptkbp:deliveredBy |
mail by air
|
| gptkbp:faster_than |
surface mail
|
| gptkbp:first_official_service |
gptkb:United_Kingdom
|
| gptkbp:first_regular_service |
1911
|
| gptkbp:first_US_service |
1918
|
| https://www.w3.org/2000/01/rdf-schema#label |
Air mail
|
| gptkbp:marking |
special stamps
blue labels |
| gptkbp:replacedBy |
regular airmail in most countries
|
| gptkbp:usedFor |
international mail
domestic mail |
| gptkbp:uses |
gptkb:aircraft
|
| gptkbp:bfsParent |
gptkb:Railway_Post_Wagon
|
| gptkbp:bfsLayer |
6
|