Photograph of the Finnish composer Karl Collan (1828–1871).
<span lang="en">Anonymous</span><span style="display:none">Unknown author</span>
circa 1864 <div style="display: none;">date QS:P,+1864-00-00T00:00:00Z/9,P1480,Q5727902</div>
Dahlström–Salmenhaara: Suomen musiikin historia 1, p. 437.