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Klintberg was also co-host (with Christina Mattsson, head of the Nordic Museum) of "Folkminnen" ("Popular memories" or "Oral traditions") a long-running radio show, which encouraged listeners to write letters describing or asking questions about the origin or significance of local legends, games, customs or other folklore.
His largest commission was the Nordic Museum on Djurgården, in North European Renaissance style, which he began in collaboration with M. Isaeus but continued alone after Isaeus's death in 1890.