according to Maurice Sendak in a New York Times article, the book has sold over 7 million copies.
Over 20 million copies of "Where the Wild Things Are" by Maurice Sendak have been sold since its publication in 1963, making it one of the best-selling Children's Books of all time.
"The Black Hand" by Chris Blatchford has sold over 100,000 copies since its release.
Over 8 million copies of Interview with the Vampire have been sold worldwide.
World of Warcraft initially sold 240,000 copies on its launch day in 2004.
Over two million copies of the Zombie Survival Guide by Max Brooks have been sold worldwide.
The unemployment rate in the United States in 1963 averaged around 5%.
Over 5 million copies of "When Bad Things Happen to Good People" by Harold S. Kushner have been sold worldwide since its publication in 1981.
It is estimated that over 1 trillion copies of books have been sold worldwide since the invention of the printing press.
"On the Road" by Jack Kerouac has sold over 3 million copies worldwide since its publication in 1957.
Over 11 million copies of The Cat in the Hat have been sold worldwide since it was first published in 1957.
Over 1 million copies of Ender's Shadow have been sold worldwide since its publication.
"Eldest" by Christopher Paolini has sold over 4.5 million copies worldwide since its initial publication in 2005.
Over 8 million copies of A Separate Peace have been sold worldwide since its publication in 1959.
Jane Eyre has sold over 50 million copies worldwide since it was first published in 1847.
Her album went Diamond...which is 10,000,000 copies sold. And quite a bit more copies have been sold since.
Approximately 7.5 million copies of "Definitely Maybe" by Oasis have been sold worldwide since its release in 1994.
"The Twits" by Roald Dahl has sold over 5 million copies worldwide since its publication in 1980.
1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 have been sold since the first release.