His 1905 photograph of Kate Sheppard has been featured on the New Zealand ten-dollar note since 1991.

[4] Clifford worked as a photographer in Dunedin and Melbourne and then moved to Christchurch around 1900.

[1][6][5] In around 1905, he took the photograph of Kate Sheppard that has been featured on the New Zealand ten-dollar note since 1991.

[6] His oldest and youngest sons both died in their early 20s in 1940 in separate incidents;[10][11] his oldest son, Robert, had been a Sergeant Pilot in the Royal Air Force, and died after being accidentally struck by a lorry at Oxford.

[15] His photographs are also held by the National Library of New Zealand and Te Papa.