Oh the Places You'll Go published in 1990 was his last book.
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dr Seuss himself plus his name is really theodor Seuss
Dr. Seuss' last book, "Oh, the Places You'll Go!", was published in 1990.
Over 50 books
Dr Seuss, real name Theodor Seuss Geisel.
Seuss was the middle name of author Theodor Seuss Geisel (1904-1991) who wrote under pen names Dr. Seuss, Rosetta Stone, and Theo Le Sieg.Geisel
Dr. Seuss wrote the book "Green Eggs and Ham" in 1960.
Puppy
Cat in the hat
Um, is this a trick question? If it was Dr. Seuss' last book, then Dr. Seuss (Theodor Geisel) wrote it. They have some books where they use his name as part of the series, but he isn't listed as the author unless he wrote it. Here is a list of his books (as Dr. Seuss): http://en.wikipedia.org/wiki/List_of_Dr._Seuss_books Here is a list of other books he wrote with other pseudonyms: http://en.wikipedia.org/wiki/Dr._Seuss#List_of_books
his wife
The Cat in the Hat was created by Dr. Suess.