I forgot to include Müffling's autobiography. See Google Books for selections: http://books.google.com/books?id=isbmzJQwFSkC&pg=PA14&dq=M%C3%BCffling&hl=en&ei=q5sMTqWXIYqj8QPfk9SbDg&sa=X&oi=book_result&ct=result&resnum=2&ved=0CDEQ6AEwAQ#v=onepage&q&f=false Irwin Scollar