The 30th annual program presented by the Six Napoleons of Baltimore, the Carlton Club, and Watson's Tin Box of Ellicott City, Scion Societies of the Baker Street Irregulars, features talks by John Pforr, Evelyn Herzog, John Baesch, Daniel F. Thomas, Beth Austin, Andrew Lee Solberg, Deborah Clark, James H. Arva, and William Hyder. For information: 410-997-9114.