Circa 1855 - here the mother is restraining her son's head movement with her hand rather than using the clamping device commonly used on both children and adults during the long exposure. Mothers, Vintage Photos, Circa 1855, Photos History, Beloved Sons, Pictures History, Vintage Postcards Photos, 1850S, 1 6Th Plates Daguerreotype
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Mother and Child Hand Coloured Ambrotype (Collodion Positive) c. 1860 | Flickr - Photo Sharing!
Gentle Mother with Sickly Son, 1/9th-Plate Ruby Ambrotype, Circa 1861 by lisby1, via Flickr