An aerial view, taken in March 1945, of the Green Point end of the Sydney boom defences, looking across the harbour towards Georges Head. The boom gate is open to allow an approaching steamer and a Manly ferry to pass through.

A drawing made in July 1942 of a Japanese midget submarine, based on the submarines that took part in the raid on Sydney Harbour. About 25 metres long, the midget submarines divided into three sections, with door openings measuring only 33x76cm. Powered by batteries, their cruising speed would have been approximately 8 knots (14.8 kilometres per hour) with a top speed of 20 knots (37km/h).

The wreck of the depot ship HMAS Kuttabul at Garden Island, Sydney, in June 1942.

Lieutenant Kieu Matsuo, commander of I-22’s midget submarine during the attack on Sydney Harbour on 31 May/1 June 1942. His body was one of four recovered after the raid.

Lieutenant Matsuo’s midget submarine emerging from Taylors Bay. The mark left by the steel hawser used to pull up the submarine is still visible on the craft, now an exhibit at the Australian War Memorial.

The composite Japanese midget submarine on its way between Sydney and Melbourne in November 1942.

Edith, having paid to view the midget submarine in Melbourne in November 1942, chalks her name on its hull.

The Director of the Australian War Memorial, Mr Bill Lancaster, presents Mrs Matsue Matsuo with the sennimbari recovered from her son’s body soon after the raid. Her daughter, Mrs Fujie Saeki (right) was one of the thousand girls who stitched the belt. In 1968, mother and daughter travelled to Australia to see where their son and brother had died 26 years earlier.