Robuta

https://nla.gov.au/nla.obj-1508783284/view Proposed entry of Australian colonies into Postal Union australian colonies proposed entry postal union https://nla.gov.au/nla.obj-1508783888/view Admission of Australian colonies to Postal Union australian colonies admission postal union https://nla.gov.au/nla.obj-1508783581/view Adherence of Australian colonies to Postal Union australian colonies adherence postal union https://nla.gov.au/nla.obj-1508781887/view Entry of Australian colonies into Postal Union australian colonies entry postal union