Dr. Seuss' 'Oh, The Places You'll Go!' turns 25
Photos: Dr. Seuss' most popular books
"What Pet Should I Get?", the first new, original book by Dr. Seuss in 25 years, was published in July 2015. Its first printing was increased from 500,000 to 1 million. The author's most popular books serve as graduation gifts, read-alouds for children, parody fodder for politicians and inspiration for big Hollywood films.
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Photos: Dr. Seuss' most popular books
Dr. Seuss' "Oh, The Places You'll Go!" debuted in 1990 and is author and illustrator Theodor Geisel's top-selling book.
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Photos: Dr. Seuss' most popular books
Characters created by Geisel and "Oh, The Places You'll Go!" have led to companion books and new editions. First lady Michelle Obama reads a Dr. Seuss-inspired work "Oh, the Things You Can Do That Are Good For You" by Tish Rabe, to students visiting the White House in January 2015.
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Photos: Dr. Seuss' most popular books
Dr. Seuss' "The Cat in the Hat" was published in 1957. Most of his books remain in print and sell briskly a quarter-century after his death.
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