Foto: See page for author, Public domain, via Wikimedia Commons
Foto: New York Society for the Prevention of Cruelty to Children
Etta Agnell Wheelerová Foto: Unknown - picture from 1800s (and years before 1880 when a picture was taken of her as an older woman), Public domain, via Wikimedia Commons
Henry Bergh Fotot: Sydney H. Coleman, Public domain, via Wikimedia Commons
