If the links work, it should lead to a site with photos of former motorcycle rider and sometimes race drive Sven-Olov "Esso" Gunnarsson. Question is if someone can identify the race and, even better, if someone can provide a list of starters and/or results.
Apart from Esso Gunnarsson and his Cooper T59, Yngve Rosqvist is also seen in one of the photos in a Cooper T76, which should lead us to 1965. The other cars, apart from a Lola Mk 5 and a Lotus 18, are clearly Melkus or similar, which means Eastern Europe. In one of the photos one can see signs with the word "ulje", which ought to mean "oil", but which language? It is not Polish or Czech, so maybe we are in Serbia or Croatia? Any ideas?