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Such photos were a popular subject for cards.
The photo on the left shows the sisters Gertrude and Ursula Falke.
#3 Nepal and China
Left: a schoolgirl from Kensington, London, accidentally caught in the lens of a photographer.
Right: A group of children and teenagers heading for Lake Serpentine in Hyde Park to go fishing.
#5 Scotland and Ireland
The photo on the right is one of the very first color photos of Ireland taken around 1913. It depicts a 14-year-old girl in traditional dress.
#6 Romania and Albania
The photo on the right shows two Albanian girls, 13–14 years old. One of them (the one on the left) will become known in the future as Mother Teresa.
Left: Maiko girls (future geishas) are relaxing on the balcony.
Right: students of the Fukuoka school – this is where the well-known “sailor” school uniform first appeared.
#8 Argentina and Mexico
The serious girl in the photo on the right is 13-year-old Frida Kahlo.
Left: Infanta Maria Cristina and Beatrice.
Right: 16-year-old Federico Garcia Lorca.
#10 Poland and Estonia
Estonian schoolgirls in the photo on the right seem to imitate the film “Roaring Twenties”, trying to look like a “cool” adult.