 Cato also relied on regular personal correspondence with experts, such as (the 100 or so) letters from Harold Cazneaux, the celebrated Pictorialist, and from Keast Burke in Sydney, a photography historian and campaigner for the recognition of photography as a historical resource and who was engaged in 1964 as consultant to the collections at the Australian National Library.From 1960–63 Cato was photography columnist for "The Age" newspaper in Melbourne.He died on 14 August 1971 at Sandringham, Melbourne, survived by a son, photographer John Cato, and a daughter.