Student postcard of 1907 using a quote from the theatre play "Alt-Heidelberg":
<dl><dd><i>I have loved only you, Käthie,</i></dd>
<dd><i>Among all people, only you.</i></dd></dl>
Unknown author<span style="display: none;">Unknown author</span>
Robert Lebeck, <i>Gaudeamus igitur</i>, Bibliophile Taschenbücher, Dortmund 1980