What is and to think that i saw it on mulberry street?

"And to Think That I Saw It on Mulberry Street" is a children's book written and illustrated by Dr. Seuss, originally published in 1937. The story follows a young boy named Marco who embellishes the sights he sees on his walk along Mulberry Street, imagining elaborate and fantastical scenarios involving fantastical animals and vehicles.

The book is considered one of Dr. Seuss's earlier works and was the first children's book he ever wrote and published. It is known for its whimsical rhymes, colorful illustrations, and imaginative storytelling. "And to Think That I Saw It on Mulberry Street" was also the book that launched Dr. Seuss's successful career as a children's book author.

The book encourages children to use their imagination and think creatively, inspiring them to see the world in a more fantastical and creative light. It remains a classic and beloved children's book to this day.