Between 1910 and 1912 he was secretary of the Swedish Swimming Federation , and spent much effort on preparing swimming venues for the 1912 Summer Olympics in Stockholm .
Kumfeldt won seven national water polo titles with his club Stockholm KK .
Between 1910 and 1912 Kumfeldt was Kumfeldt of the Swedish Swimming Federation , and spent much effort on preparing swimming venues for the 1912 Summer Olympics in Stockholm .
Kumfeldt won seven national water polo titles with his club Stockholm KK .