Sign Language Man: Thomas H. Gallaudet and His Incredible Work, by Edwin Brit Wyckoff has been published.
When he was a young man, Thomas Gallaudet saw a young girl who could not hear, and he taught her how to spell "hat" and her name, "Alice." The girl's father encouraged him to start a school for the deaf. Gallaudet traveled to Europe, where he learned French sign language. He became instrumental in the development of American Sign Language, or ASL, and the teaching of the deaf.
32 pages, full color, Enslow Publishers, Inc.
ISBN-13: 978-0-7660-3447-1
http://www.enslow.com/displayitem.asp?type=1&item=3132
Others covered in the Genius At Work! Great Inventor Biographies series are: Samuel Colt (revolver); Thomas H. Gallaudet (sign language); W.K. Kellogg (cereal); Igor Sikorsky (helicopters); Les Paul (electric guitar); George Ferris (Ferris wheel), Ralph Baer (video games); Madam C.J. Walker (hair care); Vivian Thomas (heart surgery); Theodore H. Maiman (lasers); James Naismith (basketball); Stephanie Kwolek (Kevlar); and Philo T. Farnsworth (television).