Illustrated brochure, facsimile holographic letter to prospective customer, mailing card, with original envelope and stamp. Promotional material for the 20-vol. set of "The International Library" of literature, issued in various bindings, and available to Library Club members for a limited time at half the regular price. "The enclosed booklet tells all about the Club; if you don't read it NOW, it will be no use to read it at all."