promised catalogues. The first, dated 31 May 1902, 
          was enclosed with the manuscripts, and in a letter dated 2 June 1902<a class="abbr ftnref" title="" href="#_ftn7">7<span class="expan"><em>DK-Kk</em>, 
            The Royal Library’s archives, A 9, Kapsel 17, sag 1886.</span></a>&#160;the head librarian, H.O. Lange (1863–1943), thanked Frits Hartmann for ‘such a valuable 
          expansion of the national music collection’.<a class="abbr ftnref" title="" href="#_ftn8">8<span class="