Oh Say Can You Say? is a children’s book written and illustrated by Theodor Geisel under the pen name Dr. Seuss, and published in 1979 by Random House. It is a collection of 22 tongue-twisters. It was Dr. Seuss’s last beginner book.

Dr. Seuss, also known as Theodor Seuss Geisel, is one of the most beloved children’s book authors of all time. From The Cat in the Hat to Oh, the Places You’ll Go!, his iconic characters, stories, and art style have had a lasting influence on generations of children and adults. The books he wrote and illustrated under the name Dr. Seuss (along with others he wrote but did not illustrate, under the pseudonyms Theo. LeSieg and Rosetta Stone) have been published in fifty languages. Hundreds of millions of copies have found their way into homes and hearts around the world. Dr. Seuss’s long list of awards includes Caldecott Honors, the Pulitzer Prize, and eight honorary doctorates. Works based on his original stories have won three Oscars, three Emmys, three Grammys, and a Peabody.