Spring arrives in the Northern Hemisphere today, a day that's also World Frog Day. We'll observe the former with Ella Fitzgerald and the latter with... well, frogs. It's Independence Day in Tunisia, and it's a big day for publishing. Albert Einstein sheds light on one or the other. Also, anniversary audio from Lyndon Johnson and Humphrey Bogart... and birthday audio from Vera Lynn, Holly Hunter, Ozzie Nelson, and Big Bird. We'll also hear from Libby Riddles, who in 1985 became the first woman to win the Iditarod Trail Sled Dog Race. Libby and Iditarod links are on the companion Web page at ProVoiceTracks.com/almanac.