Toby Vos was an illustrator, (comics) artist, designer of postcards and gameboards. She began her professional career around 1937, after an education in art in Amsterdam. She got a job as an artist with Steendrukkerij Luii & Co. There she illustrated books and construction plates for children. As a freelancer, she was associated with the weekly magazine Wij and De Kleine Wij, for which she made comics and illustrations. She was additionally active as editor for a women's magazine in Brussels, Belgium.
During the War, she cooperated with the 'Kabouterboekjes' collection of De Bijenkorf, for which she adapted two fairytales. For the same warehouse, she illustrated a boy's pocket book at the end of that decade. Vos illustrated some books in the popular series 'Klein Goed' by J. Riemens-Reurslag. Between 1947 and 1967, she made comics and illustrations for Bedrijfsbanden, the staff magazine of the PTT. For the publisher Terra Nova, she adapted three fairytales to comics in the early 1950s. Her stories for adults were published in magazines like Avenue, Hollands Maandblad, Maatstaf and the Flemish magazine Penelope.