Broderick, James. Galileo: The Man, His Work, His Misfortunes. New York: Harper and Row, 1964, 152 p.
Traces the life of Galileo as a man of "genius" forced to struggle against the outmoded ideas of Aristotle and of Ptolemy, as well as with the implacability of the Inquisition.
Drake, Stillman. Galileo at Work: His Scientific Biography. Chicago: The University of Chicago Press, 1978, 536 p.
Looks at Galileo's life from the point of view of his publications, with a particular focus on his lesser known writings.
(The entire section is 834 words.)