Sidorsky, David. "Sidney Hook." STANFORD ENCYCLOPEDIA OF PHILOSOPHY May 8, 2008.

The philosophical career of Sidney Hook was characterized by the length and constancy of his commitment to the philosophy of John Dewey. Hook was a leading interpreter and proponent of Deweyan pragmatic naturalism from his years as Dewey's graduate student at Columbia in the 1920s through the six decades of his philosophical teaching and writing until his death in 1989. He identified with the attribution given to him as “Dewey's bulldog.” . . . Read the rest here: http://plato.stanford.edu/entries/sidney-hook/.