| Indigenous | Australia | Telegram from Stan Davey to Prime Minister Harold Holt. |
| Western Australia | Release of a group from Hall's Creek after being charged with making spearheads from insulators. | |
| International labels | Australia | Labels to be affixed to telegrams to show message originated from overseas. |
| Instructional markings | Interuptions to the lines | |
| Interruptions to the lines | Handstamps. | |
| Various | Animals - Magpies (in SA), | |
| Various | People - | |