The J. F. Willumsen Archive / Exhibitions Exhibitions 1907 1906 ... 1910 1907-4-9 - 1907-7-13, Works by Danish Painters, Guildhall Art Gallery (London, 1907) 1907-?-? - 1907-?-?, J.F. Willumsen Udstilling (Stockholm, Helsingfors 1907)