A number of historic postcards have been donated to the Kangaroo Valley Historical Society. Postcards are “a card on which a message may be sent by mail without an envelope, that often has a picture on one side and to which the sender must affix a stamp”.
The first Australian postcard was issued by New South Wales in 1875. Early postcards were Post Office monopolies. It was not until 1895 in Australia that private makers could sell unstamped (pictorial) postcards on which the adhesive stamp could be affixed. In November 1898, the New South Wales Post Office introduced pictorial postcards featuring attractive scenes of buildings, rivers, waterfalls, etc printed on the message (reverse) side. The address could only be written on the front with an imprinted one penny (1d), or one and a half pence (1 1/2d for overseas), New South Wales stamp.
Between 1900 and 1920, picture postcards in Australia became incredibly popular as a cheap and easy message or a cheap form of a souvenir.
https://australiapostcollectables.com.au/articles/150-years-of-the-postcard WW1 and WWII.
