Question: Which American author has sold over 600 million copies one of which had a television special of it in 1971?

The Cat in the Hat is an American animated musical television special first aired on CBS on March 10, 1971, based on the 1957 Dr. Seuss children's book of the same name, and produced by DePatie-Freleng Enterprises.  With voices by Allan Sherman and prolific vocal performer Daws Butler, this half-hour special is a loose adaptation with added musical sequences. <SEP> Theodor Seuss Geisel ( ; March 2, 1904 – September 24, 1991) was an American author, political cartoonist, poet, animator, book publisher, and artist, best known for authoring children's books under the pen name Dr. Seuss ( ).  His work includes several of the most popular children's books of all time, selling over 600 million copies and being translated into more than 20 languages by the time of his death. <SEP> American singer Usher has released eight studio albums, nine compilation albums, eight extended plays, and fifty-three singles (including eleven as a featured artist).  His music has been released on the LaFace, Arista, Jive, and RCA record labels.  23 million of his albums were shipped in the United States, and sold over 43 million albums worldwide, leading to a combined 75 million records and making him one of the best selling music artists.  He also has 9 Hot 100 number-one singles (all as a lead) and 18 Hot 100 top-ten singles.  In 1994, Usher released his self-titled debut album in North America, producing three singles that had moderate chart success, and the album sold more than 500,000 copies.  His follow-up 1997 album "My Way" sold 8 million copies, becoming his breakthrough album.  It was certified six-times platinum in the US, and spawned three successful singles, including his first US "Billboard" Hot 100 number-one hit "Nice & Slow".  Usher's success continued in 2001 with his third studio album "8701".  It debuted at number four on the "Billboard" 200.  The album produced two number-one singles—"U Remind Me" and "U Got It Bad".  It has sold more than 4.7 million copies and has been certified four-times platinum in the US.  Its worldwide sales stand at over 8 million. <SEP> The highest-selling albums and EPs in the United States are ranked in the "Billboard" 200, published by "Billboard" magazine.  The data are compiled by Nielsen Soundscan based on each album's weekly physical and digital sales.  25 acts achieved number one albums during this year with artist such as Nelly and Shania Twain who had their albums debut at number one on the chart.  Rapper Eminem's "The Eminem Show" is the best selling album of 2002 selling over approximately 7.6 million copies by the end of the year.  It is also the longest running album of 2002 spending six non-consecutive weeks the chart and was known for its first full week of sales debut of 1.322 million copies which Nielsen SoundScan scanned as the sixth largest sales of all time in its first week.  Its debut of 1.322 million copies has still not been matched by any album today since except for Taylor Swift's album "1989", which opened with first week sales of 1.279 million copies.  The band Creed continued its eight week long run on the chart but is credited as the longest running album 2001.  Jennifer Lopez earned her second number one album on the charts with "", which became the highest first week sales of a remix album at the time.  R&B artist Ashanti earned her first number one album with her self-titled debut album "Ashanti", which opened up with first week sales of 503,000 copies in its first week alone.  Puff Daddy earned his first number one album since "No Way Out" back in 1997.  Rapper Jay-Z earned his fifth chart topper with "", which opened up with first week sales of 545,000 copies alone.  Heavy metal band Disturbed earned its first number one album on the chart with "Believe", which opened up with first week sales of 284,000 copies alone.  Country music singer Shania Twain's album "Up! " opened up with a huge first week sales of 857,000 copies in its first week alone, giving her the recognition of the highest first week sales of her career and second highest of the year, only behind Eminem's "The Eminem Show" and at the time the fastest selling solo female album ever.  Nelly's album "Nellyville" opened up with his highest first week sales of his career which logged on with huge sales of 714,000 copies in its first week alone, which beat his sales of his debut album "Country Grammar", which opened up with first week sales of 235,000 copies.  Country singer Alan Jackson album "Drive" gave him his first number one album on the chart and opened up with first week sales of 211,000 copies alone.