Organ adapted for use in <a href="//commons.wikimedia.org/wiki/H%C3%A4ggstr%C3%B6m_diagrams" class="mw-redirect" title="Häggström diagrams">Häggström diagrams</a>
<a href="//commons.wikimedia.org/wiki/User:Mikael_H%C3%A4ggstr%C3%B6m" title="User:Mikael Häggström">Mikael Häggström</a>
2008-11-27
<a href="https://en.wikipedia.org/wiki/Gray607.png" class="extiw" title="w:Gray607.png">w:Gray607.png</a> (Public domain license)