The Society for Industrial and Applied Mathematics (SIAM) has three prizes named after George Pólya: the George Pólya Prize for Mathematical Exposition,[1] established in 2013; the George Pólya Prize in Applied Combinatorics,[2] established in 1969, and first awarded in 1971; and the George Pólya Prize in Mathematics,[3] established in 1992, to complement the exposition and applied combinatorics prizes.
Frank Harary and William T. Tutte donated money to establish the original 1969 prize in combinatorics.
[4] Currently, funding for the three SIAM prizes is provided by the estate of Stella Pólya, the wife of George Pólya.
(List of winners from Pólya Prize page at SIAM website.)