text: * [https://books.google.com/books?id=QQlUAAAAcAAJ Kurzer Umriß der Lebens-Geschichte des Herrn Dr. Joseph von Fraunhofer]. By Joseph von Utzschneider. Rösl, 1826.
  * [https://archive.org/details/prismaticanddif00wollgoog Prismatic and diffraction spectra]: memoirs. By Joseph von Fraunhofer, William Hyde Wollaston. American Book Co., 1899.