Just had a tough search land at our Press Photo History Project:
“The prints carry the stamp of an agency called Reflect. It seems that the photographer and writer in question were Belgian, I guess based in Brussels or Liege. It would also be good to know if there is a chance of tracing any surviving unused prints or negs from the weekend in question. It was a photo essay, so there must have been quite a lot of stuff left over.”
More here: www.PressPhotoHistory.com