From a New York Times obit by Penelope Green headlined “Leonard Kessler, Colorful Children’s Book Author, Dies at 101”:

Leonard Kessler, the author and illustrator of hundreds of children’s books for early readers that celebrated the ordinary (“I Have Twenty Teeth — Do You?”) and the not-so-ordinary (“Mr. Pine’s Purple House”), died at his home in Sarasota, Fla.

“A white house is fine,” declared Mr. Pine, the doughty hero of Mr. Kessler’s beloved “Mr. Pine’s Purple House.” “But there are FIFTY white houses all in a line on Vine Street. How can I tell which one is mine?” Mr. Pine then set out to distinguish his house with purple paint, soldiering on despite mishaps and upsets, in a paean to the maverick spirit and perseverance….