Undaunted by Blindness, 2nd Edition - Clifford E. Olstrom - Google Books

http://books.google.de/books?id=k9K77s1IRgoC&pg=PT257&dq=%22Helmut+Walcha%22+blind&hl=de&sa=X&ei=pwU8UrWcJNOL4gSK1oDIBg&redir_es

The purpose of this book is to provide concise biographical information about 400 notable blind persons. The people in this volume are but a small sample of many thousands of notable blind persons in history. Most of the information about their lives comes…