Philadelphia 1876 International Expo Silk Culture Souvenir. San Francisco: Joseph Neumann, 1876. Souvenir, sold or given away at the Philadelphia International Exposition by Joseph Neumann of San Francisco. Printed cardboard box featuring images of a Silk Worm and male and female moths. The box is complete with four original silk worm cocoons both male and female. Includes the original leaflet detailing the life of the silk worm and instructions on how the cocoons are to be harvested for their silk. Leaflet signed by Neumann ?At the Centennial International Exhibition of Philadelphia. American Silk Department, Main Building. A 17, 18 Agricultural Hall, and the California Centannial Building." Small losses, toning along folds; box very good. Provenance: Ex. Niagara Falls Museum collection. Leaflet 6 x 4 ?".