Previously unseen photographs of a Leeds park taken between the 1930s and 1950s are to go on display.
More than 100 photos of Roundhay Park were found last year in a scrapbook owned by an ex-council official.
Shots include animals in the park's zoo, a queue of people at a swimming pool and picnickers at a boating lake.
About 20 of these, which form part of a collection of 133 other images put together by Leeds University, are to go on show at Roundhay Park on Saturday.
The photographs were taken by Thomas Trigg, a former head of parks at Leeds City Council during the mid-1900s.
Many of those going on display were shot during a May bank holiday in 1944.
Images in the collection include pictures of the city's other 68 parks.
The exhibition is part of the university's project mapping the history of Leeds' parks and green spaces.
David Churchill, from the university, said the photographs provided "a rich historical record of park life in Leeds".
"The photographs we've received show they are the jewels of the city - and our research with park users reveals that many people are anxious for them to remain as the treasured social assets they are," said Dr Churchill.
Rose Gibson, manager of Leeds Central Library, said: "Discovering these new photographs of Leeds parks has offered a fascinating insight into how the people of Leeds have enjoyed using the parks over the years."