THE AUTHOR: BAYNARD KENDRICK, who is not blind himself, has made a special study of blind people for years. Part of the fruit of this study was his famous series of mysteries about the blind detective, Duncan Maclain. Another result was this book, which stems from the remarkable things he has seen in his work -- the remaking into dynamic human beings of men who had always assumed they would rather be dead than blind. Born in Philadelphia, Mr. Kendrick had a successful business career before he decided to give his full time to writing. Among his many other books and motion picture scripts is the Bantam Giant, The Flames of Time. When the Blinded Veterans Association was founded, Mr. Kendrick was the only non-blind adviser of the group and was elected Honorary Chairman of the Board of Directors.