Unnamed woman - possibly a Gast or Struve
I have two photographs of this woman which were handed down either by my paternal Grandfather William F. Stradtman, his wife Mary Ella Gast Stradtman, or Mary Ella's mother Sarah Jane Mullen Gast. William F. Stradtman worked for a time in Denver and likely stayed with Struve relatives (which leads me to believe that the woman may be a cousin of his through his mother Sophie Wilhelmine Amalie Struve Stradtman). Mary Ella Gast Stradtman's father had Gast relatives in Denver in the same time period (ca. 1890).