<sod>The [[Royal Conservatory of Brussels]] conserves several autograph documents from Constance Mozart, including letters to her son Franz Xaver Wolfgang Mozart, as well as a small illustrated ''Album de Souvenirs'', dated 1789 but covering the 1801-1823 period in which she collects memories, impressions and poems (ref. [[Jean-Lucien Hollenfeltz Fund|Jean-Lucien Hollenfeltz fund]], B-Bc-FH-163).<eod>
<sod>The [[Royal Conservatory of Brussels]] conserves several autograph documents from Constance Mozart, including letters to her son Franz Xaver Wolfgang Mozart, as well as a small illustrated ''Album de Souvenirs'', dated 1789 but covering the 1801–1823 period in which she collects memories, impressions and poems (ref. [[Jean-Lucien Hollenfeltz Fund|Jean-Lucien Hollenfeltz fund]], B-Bc-FH-163).<eod>