I'm cynical enough to believe that the Dr. Seuss estate on the eve of his birthday took advantage of cancel culture to boost the sales of some of his less popular titles.

They are like the top book sales today on Amazon.

Books that do not meet a certain sales threshold leave print all the time.

What are the six books that have been cancelled? I need to buy them before they run out.

Look (quickly) online for .pdf versions and grab and print out.

Mulberry Street is already selling for hundreds of dollars. I saw some older editions going to several thousand.