A newly discovered Dr. Seuss manuscript featuring the Cat in the Hat and celebrating the United States will be published next year, just in time for America’s 250th anniversary.

“Sing the 50 United States” is the first full manuscript written by Dr. Seuss — born Theodor Geisel — to be discovered since the posthumous release of “What Pet Should I Get?” in 2015.

The manuscript was found earlier this year in archival materials at the Geisel Library at UC San Diego. Geisel also left behind a cover sketch and notes on the overall art direction. New illustrations were done by artist Tom Brannon, in the style of Dr. Seuss.

The new book aims to teach readers the names of the states.

“To sing the 50 United States, you have to use your brain,” the Cat in the Hat advises. “Massachusetts

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