1. Nininger, H. H., Popular Astro., 48, 328 (1940).
2. Nininger, H. H., and Nininger, A. D., The Nininger Collection of Meteorites, Winslow, Arizona, 129 and Plate VIII, Fig. 9 (1950).
3. Goldberg, E. A., Uchiyama, A., and Brown, H., Geochim. et Cosmochim. Acta, 2, 1 (1951).
4. Brown, H., J. Geophys. Res., 66, 1316 (1961).
5. Honda, M., Shedlovsky, J. P., and Arnold, J. R., Geochim. et Cosmochim. Acta, 22, 133 (1961).