Cuban researcher <a href="https://en.wikipedia.org/wiki/en:Carlos_J._Finlay" class="extiw" title="w:en:Carlos J. Finlay">Carlos J. Finlay</a> reading.
The photograph is undated and without identification beyond the name of the subject.
Before Carlos J. Finlays' death in 1915.
<a rel="nofollow" class="external text" href="http://history.amedd.army.mil/booksdocs/spanam/gillet3/default.html">The National Library of Medicine according to "THE ARMY MEDICAL DEPARTMENT 1865-1917" by Mary C. Gillet</a>