graphical Memoirs, vol. 40, pp. 69-90. Washington, D.C.: National Academy of Sciences.

1970 Reminiscences of a mathematical immigrant in the United States. Am. Math. Mon. 77(4).

1971 The early development of algebraic topology. Bol. Soc. Brasileira Mat. 1:1-48.

AUXILIARY REFERENCES

R. C. Archibald, A Semicentennial History of the American Mathematical Society, I, New York, 1938, pp. 236-40.

Algebraic Geometry and Topology, a Symposium in Honor of S. Lefschetz , edited by R. H. Fox, D. C. Spencer, and A. W. Tucker, Princeton University Press, 1957, pp. 1-49.

Selected Papers by S. Lefschetz, including the book I 'analysis situs, Chelsea Publishing Company, Bronx, New York, 1971.

Sir William Hodge, "Solomon Lefschetz, 1884-1972," in Biographical Memoirs of Fellows of the Royal Society, 19, London, 1973; reprinted in Bulletin of the London Mathematical Society, 6 (1974), pp. 198-217 and in The Lefschetz Centennial Conference, I, Mexico 1984, D. Sunderaraman, ed., published as Contemporary Mathematics, 58.1, American Mathematical Society, 1986, pp. 27-46.

J. K. Hale and J. P. La Salle, The Contribution of Solomon Lefschetz to the Study of Differential Equations, typed manuscript prepared for Hodge in writing the above article.

J. P. La Salle, "Memorial to Solomon Lefschetz," in IEEE Transactions on Automatic Control, vol. AC-18 ( 1973), pp. 89-90.

Lawrence Markus, "Solomon Lefschetz, an Appreciation in Memoriam," Bull. Am. Math. Soc., vol. 79 ( 1973), pp. 663-80.

William Hodge, "Solomon Lefschetz, 1884-1972," in Yearbook of the American Philosophical Society ( 1974), pp. 186-93.

"Lefschetz, Solomon," in National Cyclopedia of American Biography, 56 ( 1975), James T. White and Co., Clifton, New Jersey, pp. 503-4.

F. Nebeker and A. W. Tucker, "Lefschetz, Solomon" in Dictionary of Scientific Biography, Supplement II, 1991.



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