Barnens brevlåda was a Swedish children's radio programme. It was led by Sven Jerring. It aired totally 1 785 times between 11 September 1925 and 1972. When airing for last time, it was the longest-lasting Swedish radio programme of that time. The record was broken on 14 November 1999 by the programme Smoke Rings.
- "Leif "Smoke Rings" Anderson är död" (in Swedish). Aftonbladet. 18 November 1999. Retrieved 5 April 2011.