Franz Cizek (1865-1946) was an Austrian genre and portrait painter who was also well known as an art teacher and art education reformer, particularly when it came to teaching art to children. In 1903, Cizek started a small art school for children ages 4 to 14, with classes each Saturday, broken up into two hour blocks, the first for the younger students, and the second for the older ones. Cizek's students would produce an overwhelming amount of art work, which, starting in the 1920s, was used to promote a variety of childhood charities. Ruth Kalmar attended Cizek's art school between 1926-1930, and in her last year, at age fourteen, completed the set of ten images seen on the postcards.
Ruth Kalmar (now Ruth Kalmar Wilson) herself, would become an artist and designer in her own right, traveling the world and teaching at several prominent schools, such the Museum School of the Museum of Fine Arts in Boston, Tufts University, Harvard University's Art Program for Children and Massachusetts College of Art.