Robyn Lauster. Anchorage, AK. In the winter of 1924-25, an outbreak of diphtheria killed two children and threatened many more. The only hope of containing the outbreak was to deliver antitoxin to Nome via the Iditarod Trail. A relay of 20 mushers and 150 dogs carried the medicine along the 674-mile trail, in a record 5 days and 7 hours. This Little Free Library, in Balto-Seppala Park, is dedicated to the brave dogs and men who risked their own lives to save children from a dreaded disease.