Here’s a written transcript
https://www.nma.gov.au/explore/features/ned-kelly-jerilderie-letter/transcription
Sent from Mdewakanton Dakota lands / Sept. 29 1837
Treaty with the Sioux of September 29th, 1837
“We Will Talk of Nothing Else”: Dakota Interpretations of the Treaty of 1837
Sadly, he’s a pretty heavily sanitised national icon. He’s a folk hero, but his issues with Australia’s extremely corrupt police force are largely ignored or dismissed as a “product of their times” (ignoring the fact that the same colonial police from back then is still the foundation for the police of Australia to this day).