Peter Liddle

Peter Hammond Liddle (born 1934) is a British historian and author specialising in the study of the First and Second World Wars. In the 1960s he developed the Liddle Collection, a large collection of interviews and memorabilia mainly relating to the First World War that is now held at the University of Leeds.

Career Peter Liddle was born in 1934.

In 1968 Liddle started interviewing people about their lives during and around the First World War, collecting oral history from the era. He founded the Liddle Collection and worked to expand in throughout the 1970s and 1980s, placing advertisements and recording many interviews. He also collected personal papers and memorabilia connected to the First World War and the collection grew to be the "largest archive of personal documents from the first world war". He developed a team of volunteers to handle the influx of materials. In 2016 a museum in Leeds scanned images of the diary and sent them to Palmer's family.

By 1986, Liddle was a senior lecturer of history at the University of Sunderland. That year, The Sunday Times reported that the collection was at risk of being "split up or moved to North America" because the collection had grown out of the facilities where it was being held at Sunderland. Liddle was paying £2,000 a year to house the collection and was forced to stop collecting new items. The University of Leeds had purchased the collection by 1988,

Liddle's publications include Facing Armageddon: The First World War Experienced, D-Day, by Those Who Were There, and The Great War 1914–1945: Lightning Strikes Twice. In 2011 he published Captured Memories 1990-1918: Across the Threshold of War, an edited collection of twenty-nine interviews.