Palais, 1965. Palais, Richard S. (1965), Seminar on the Atiyah–Singer Index Theorem, Annals of Mathematics Studies 57, S.l.: Princeton Univ Press, ISBN978-0-691-08031-4. This describes the original proof of the theorem (Atiyah and Singer never published their original proof themselves, but only improved versions of it.)
Cartan-Schwartz, 1965. Cartan-Schwartz (1965), Séminaire Henri Cartan. Théoreme d'Atiyah-Singer sur l'indice d'un opérateur différentiel elliptique. 16 annee: 1963/64 dirigee par Henri Cartan et Laurent Schwartz. Fasc. 1; Fasc. 2. (French), École Normale Supérieure, Secrétariat mathématique, Paris, Zbl0149.41102.
Atiyah, 1970. Atiyah, M. F. (1970), «Global Theory of Elliptic Operators», Proc. Int. Conf. on Functional Analysis and Related Topics (Tokyo, 1969), University of Tokio, Zbl0193.43601.
Sullivan, 1979. Sullivan, D. (1979), «Hyperbolic geometry and homeomorphisms», J.C. Candrell, "Geometric Topology", Proc. Georgia Topology Conf. Athens, Georgia, 1977, New York: Academic Press, pp. 543-595, ISBN978-0-12-158860-1, Zbl0478.57007.