This is a black-and-white photograph of Harold Holt, Australia's seventeenth prime minister. It shows him alongside Lyndon Baines Johnson, the first US president to visit Australia, and 'First Lady' Lady Bird Johnson in October 1966.
Holt became prime minister in January 1966 after being elected leader by Liberal Party parliamentarians as a result of Menzies's resignation. He is most famously known as the prime minister who went missing in December 1967 while swimming off Cheviot Beach in Victoria. His body was never recovered.
Holt's educational resource page offers a variety of archival material such as letters, parliamentary documents, photographs and links to National Archives of Australia websites such as 'Australia's Prime Ministers'.