1. Formerly, Research Asst., Dept. of Struct. Engrg., Cornell Univ., Ithaca, N.Y.
2. Asst. Prof. and Mgr. of Struct. Research, Dept. of Struct. Engrg., Cornell Univ., Ithaca, N.Y.
3. Class of 1912 Prof., Dept. of Struct. Engrg., Cornell Univ., Ithaca, N.Y.