Though IOLANTHE was first performed in 1882; rather old for it to be referenced for a 1919 photo.
No it was the post at 13 I was looking at...it sort of looks like how I’d always pictured Iolanthe.
Strephon:”She was my mother.”
Phyllis: “Yesss, a “Young” mother...!!
Strephon: “It’s true...”
Phyllis: “Wellll, she “wears well”...!!