[1] Post made her debut in 1946 as illustrator of the book Het boek van Thijs en Claartje written by J.A.

[2] Post won a Vlag en Wimpel award in 1980 for illustrating the book Ik woonde in een leunstoel by Guus Kuijer and also in 1984 for illustrating the book Het geheim van Toet-Mu-Is III by Mansfield Kirby.

In 1982 she won the Deutscher Jugendliteraturpreis together with Guus Kuijer for the book Erzähl mir von Oma, the German translation of Krassen in het tafelblad (1978).

In 2006, at age 81, Post received the Zilveren Penseel award for her illustrations in Tellegen's book Midden in de nacht.

[4] In 2020, some of her illustrations for Annie M. G. Schmidt's books appeared in an online exhibition by the Dutch Literature Museum.