"To commemorate sincere friendship [unclear phrase] Dona Paula (?) V[which is probably for Valdez] de Calderon and family on the 21st birthday. Chihuahua, February (?) 11, 1883, Jose de la Luz Nunez.
From what I can make out, this photo is of my great-grandmother Julia Calderon de Nunez. The back has a note, paraphrased in English: "to my sister Calixta Calderon de Herrera, Chihuahua, April 7, 1882, Julia Calderon."
My grandmother's sister Ester Nunez, probably from after 1910:
A portrait of three woman found in the Nunez-Calderon collection, but unlabeled.