Portrait of Anna Fles (1854-1906) in a newspaper after her death in 1906. Speach- and singing teacher, writer and lyric writer.
Unknown author<span style="display: none;">Unknown author</span>
Het Geheugen van Nederland (Collectie Veenhuijzen, Centraal Bureau voor Genealogie, Den Haag) op: <a rel="nofollow" class="external free" href="https://resolver.kb.nl/resolve?urn=urn:gvn:CBG01:6232">https://resolver.kb.nl/resolve?urn=urn:gvn:CBG01:6232</a>