Plaque commemorating <a href="https://en.wikipedia.org/wiki/Franz_Grillparzer" class="extiw" title="en:Franz Grillparzer">Franz Grillparzer</a> acting as director of the <i>Hofkammerarchiv</i>, Johannesgasse 6, 1st district of Vienna
<a href="//commons.wikimedia.org/wiki/User:P_e_z_i" title="User:P e z i">P e z i</a>
<span class="int-own-work" lang="en">Own work</span>