Amy Webber's pictures show wounded soldiers in Shepreth, Cambridgeshire, where the village hall was turned into a military hospital between 1915 and 1919.
Soldiers are seen posing with nurses, watching as a flag is raised, enjoying a smoke while dressed in "hospital blues" and preparing for a concert or dance.
Mrs Webber, who lived in a village manor house with husband Mowbray and daughter Mona, worked at the hospital and can been seen in several images.
The snapshots were passed to Mrs Webber's cook, Victoria Brooks, who also worked as a nurse at the hospital, and have been handed down to Mrs Brooks's granddaughter, retired nurse Libby Osman-Barter.
Mrs Osman-Barter's family contacted villagers in Shepreth after hearing how a postcard written to a wounded soldier in April 1915, had been found in the village hall shortly before Christmas.
Locals were told that Mrs Osman-Barter had albums containing dozens of snapshots taken in Shepreth during and just after the Great War. "It seems that Amy Webber was a very keen photographer and either took or had lots of pictures taken," said Mrs Osman-Barter, 62, who was born in Shepreth but lives in Exmouth, Devon.