His shows were known for being educational as well as entertaining. A live "Story Telling" segment with drawings told tales that had a meaningful lesson at the end. He often brought on educational guests, in addition to the occasional appearances by stars like Lucille Ball, who were also parents. For a time he appeared on NBC's "Today" show with Dave Garroway. London engaged the children watching at home in holiday craft-making, hobbies, and songs, and related stories about the creations of holidays, Thanksgiving, Christmas, Easter, the Fourth of July, Halloween, etc.