"We've been very moved by the public response," museum director Linda Wigley said this week.
"I think we've been overwhelmed by it, actually. Not just the images but the stories behind the images," Ms Wigley said.
The photographic project had had a "huge emotional impact" and "created a lot of talk among visitors".
"It's all very personal. It's people opening up their personal stories."
Shortly before the display opened to the public, on Anzac Day, only about 100 photographs had been received, but nearly twice as many have poured in during the month-long exhibition, which closes tomorrow.
An earlier article in the Otago Daily Times had raised public awareness of the project and helped boost the community response, she said.
The photographic display was more immediate and informal than the usual museum exhibits, with photographs being brought in by relatives and copied electronically by museum staff, the images often going up on the wall within the hour, organisers said.
The photographs are part of an exhibition titled "We Will Remember Them" and accompany a roll of honour which commemorates the more than 2500 Dunedin men and women who died in seven wars or other military conflicts last century.
Exhibition curator Sean Brosnahan said the Wall of Memory display complemented the roll of honour by providing images of the many soldiers who returned from war as well as those who had been killed in battle.
Working closely with family members who had brought in their photographs had been a moving experience.
Mr Brosnahan said also he had also sometimes become "a bit teary-eyed" to hear about the grim ways in which war had struck down fit, young men "in the full vigour of their manhood".
