Creator:K.V. Date Created:August 14, 1963 Place Created: Keywords:H. Tracy Hall,September 23, 1963,March 3, 1961 Context:TETRAHEDRON FORMING DIE ASSEMBLY ************************************************** TETRAHEDRON FORMING DIE ASSEMBLY August 14, 1963 K.V. H. Tracy Hall September 23, 1963 March 3, 1961