The Vietnam Slide Project was created by photo editor Kendra Rennick, who began collecting photo slides after a close friend lost her father, a Vietnam veteran. Her friend found a box of slides that her father had taken while in Vietnam and from there Rennick has continued to collect photographs that Vietnam veterans took during their tours of duty. Here: A photo taken from the collection of D.Thornton, who served in the First Air Cavalry division of the United States Army. (Photo by D.Thornton/The Vietnam Slide Project)

Girls Aloud: Nicola Roberts, Kimberley Walsh, Sarah Harding and Cheryl Cole at Kimberley Walsh's birthday party hosted by Damian Darkko at Mint Nightclub in London, Britain on November 25, 2006. The Girls Aloud star Sarah Harding has died at the age of 39, her mother has said in a post on Instagram. Issue date: Sunday September 5, 2021. (Photo by Rex Features/Shutterstock)

American model Isabella Khair Hadid is seen on March 13, 2018 in Los Angeles, California. (Photo by The Mega Agency)

Participants run through coloured powder during the Colour Run race in Moscow, Russia on June 5, 2022. (Photo by Maxim Shemetov/Reuters)

Egyptian bootblacks cleaning a European's shoes in Cairo. (Photo by Hulton Archive/Getty Images). Circa 1870

Large trumpet vines spread across electrical lines next to a highway in Kinston, N.C., on June 23, 2014. (Photo by Janet S. Carter/Kinston Free Press via AP Photo)

A US soccer fan cheers during the FIFA World Cup 2014 group A preliminary round match between Brazil and Croatia at the FIFA Fan Fest in Copacabana, Rio de Janeiro, Brazil, 12 June 2014. Brazil won 3-1. The FIFA World Cup 2014 will take place in Brazil from 12 June to 13 July 2014. (Photo by Abedin Taherkenareh/EPA)