expan">'en saadan værdifuld Forøgelse af den 
            nationale Musiksamling'; letter from H.O. Lange, dated 2 June 1902; <em>DK-Kk</em>, The Royal Library’s archives, A9, Kapsel 17, sag 1886.</span></a>&#160; 
          Later this was followed by another catalogue dated 2 September 1902.</p>
        <p> </p>
        <p>Not everything was handed over at this time, though, and in 1934 Frits Hartmann’s son, barrister Godfred Hartmann, presented the Library with a 
          packet of manuscript