Original CDV photo of a woman wearing an unusual dress/pants combo! I have seen similar outfits worn by female doctors of the period, like Mary Walker. Also note there is an object on the floor by her feet - can't tell what it is but it must have been placed there intentionally. 4" x 2.5" with blank back, as produced..
So there is no ID or location info, but to me, she bears some resemblance to Mary Ann Bickerdyke. (July 19, 1817 November 8, 1901), AKA Mother Bickerdyke, the.Hospital administrator for Union soldiers during the Civil War. Her life can be found on Wikipedia. The item "1860s CDV Photo Rare Union Civil War Soldiers Nurse Mary Ann Bickerdyke" is in sale since Tuesday, May 14, 2019. This item is in the category "Collectibles\Photographic Images\Vintage & Antique (Pre-1940)\CDVs". The seller is "jack_mord" and is located in Woodinville, Washington. This item can be shipped to United States.