In December 1888 he painted La Berceuse – a figure that he thought as good as his sunflowers. It has a limited palette, varied brushstrokes and simple contours. It appears to be a culmination of portraits of the Roulin family completed in Arles between November and December. The portraits show a shift in style from the fluid, restrained brushstrokes and even surface of Portrait of the Postman to the frenetic style, rough surface, broad brushstrokes and use of a palette knife in Madame Roulin with Baby.
In November 1959, Van Dyke made his Broadway debut in The Girls Against the Boys. He then played the lead role of Albert Peterson in Bye Bye Birdie, which ran from April 14, 1960, to October 7, 1961. In a May 2011 interview with Rachael Ray, Van Dyke said that when he auditioned for a smaller part in the show he had no experience as a dancer, and that after he sang his audition song he did an impromptu soft-shoe out of sheer nervousness. Gower Champion, the show's director and choreographer, was watching, and promptly went up on stage to inform Van Dyke he had the lead. An astonished Van Dyke protested that he could not dance, to which Champion replied: "We'll teach you". That musical won four Tony awards including Van Dyke's Best Featured Actor Tony, in 1961. In 1980, Van Dyke appeared as the title role in the first Broadway revival of The Music Man.