How many childrens books make up the complete set of the Dr.Seusscollection, where do I go?

Answer 1

With millions of books in print, and nearly all of his 50-plus titles still available for sale, Dr. Seuss was, up until his untimely death in 1991, probably the most prolific living writer behind Barbara Cartland. In fact, his GREEN EGGS AND HAM is the third largest selling book in the English language.
BOOKS in alphabetical order:
1 -- And To Think That I Saw It On Mulberry Street (1938)
2 -- Bartholomew and the Oobleck (1959)
3 -- The Butter Battle Book (1984)
4 -- The Cat in the Hat (1957)
5 -- The Cat in the Hat Beginner Book (1966)
6 -- The Cat in the Hat Comes Back (1968)
7 -- The Cat in the Hat Song Book (1967)
8 -- The Cat's Quizzer (1976)
9 -- Come Over To My House (1966)
10 -- Did I Ever Tell You How Lucky You Are? (1973)
11 -- Dr. Seuss's ABC (1963)
12 -- Dr. Seuss's Sleep Book (1962)
13 -- The Eye Book (1968)
14 -- The 500 Hats of Bartholomew Cubbins (1938)
15 -- The Foot Book (1968)
16 -- Fox in Socks (1965)
17 -- Great Day For Up! (1974)
18 -- Green Eggs and Ham (1960)
19 -- Happy Birthday to You! (1959)
20 -- Hop on Pop (1963)
21 -- Horton Hatches The Egg (1940)
22 -- Horton Hears A Who (1954)
23 -- How The Grinch Stole Christmas (1957)
24 -- Hunches in Bunches (1982)
25 -- I Am Not Going To Get Up Today! (1987)
26 -- I Can Draw Myself (1970)
27 -- I Can Lick 30 Tigers Today (1969)
27a -- King Looie Katz
27b -- The Glunk That Got Thunk
28 -- I Can Read With My Eyes Shut (1978)
29 -- I Had Trouble in Getting to Solla Sollew (1965)
30 -- If I Ran The Circus (1956)
31 -- If I Ran The Zoo (1950)
32 -- I Wish I Had Duck Feet (1965)
33 -- The King's Stilts (1939)
34 -- The Lorax (1971)
35 -- Marvin K. Mooney, Will You Please Go Now! (1972)
36 -- McElligot's Pool (1947)
37 -- Mr. Brown Can Moo! Can You? (1970)
38 -- My Book About Me, By Me Myself (1969)
39 -- Oh Say Can You Say (1979)
40 -- Oh, The Places You'll Go! (1990)
41 -- Oh, The Thinks You Can Think! (1975)
42 -- On Beyond Zebra (1955)
43 -- One Fish, Two Fish, Red Fish, Blue Fish (1960)
44 -- Scrambled Eggs Super! (1954)
45 -- The Seven Lady Godivas (1939)
46 -- Shape of Me and Other Stuff (1973)
47 -- The Sneetches and Other Stories (1961)
47a -- The Zax
47b -- Too Many Daves
47c -- What Was I Scared Of?
48 -- Ten Apples Up On Top (1961)
49 -- There's a Wocket In My Pocket (1974)
50 -- Thidwick, The Big-Hearted Moose (1948)
51 -- The Tooth Book (1981)
52 -- The Tough Coughs as He Ploughs The Dough (1987)
53 -- Yertle the Turtle and Other Stories (1958)
53a-- Gertrude McFuzz
53b -- The Big Brag
54 -- You're Only Old Once! (1986)
Amazon.com should have most of them, as they stay in print.

Answer 2

go to amazon.com or ebay.com
also look under dr.seuss in googles, maybe there is a website where they have all the books regardless how old they might be.

Answer 3

http://www.seuss.org/seuss/seuss.books.html