Catharine Hopkins seems to have joined Vogue around 1918 or so, just after World War I.
When Vogue did a spread on its accredited illustrators in 1923, she was included. She was mentioned as being one of the 5 American artists in Paris in 1923, Catharine Hopkins had then been with Vogue for some years, but was a somewhat minor figure.
To accompany her photograph, she sketched her interests which were children, animals and potted plants.
Her illustrations in Vogue, were mostly of children, and were used within the magazine to accompany articles on family matters. Her sketches were soon to disappear altogether around the end of the 20's.