Beginner Books is the Random House imprint for young children ages 4-8, co-founded by Phyllis Cerf with Ted Geisel, more often known as Dr. Seuss, and his wife, Helen Palmer Geisel.

Their first book was Dr. Seuss's The Cat in the Hat (1957). For each book, the author was to use no more than 200 words taken from a list of 379 words compiled by Cerf as the basic vocabulary for young readers, along with twenty more slightly harder "emergency" words.

With only four titles in their catalog in 1958, they are earning a million dollars a year two years later, making Random House the largest publisher of children's books in the United States.

The Cat in the Hat Dr. Seuss
The Cat in the Hat Comes Back Dr. Seuss
A Fly Went By Mike McClintock
The Big Jump and Other Stories (alive) Benjamin Elkin
A Big Ball of String Marion Holland
Sam and the Firefly P.D. Eastman
You Will Go To The Moon Mae Freeman
Cowboy Andy (alive) Edna Walker Chandler
The Whales Go By (alive) Fred B. Phleger
Stop That Ball! Mike McClintock
Book of Laughs Bennet Cerf
Ann Can Fly (alive) Fred Phleger
One Fish Two Fish Red Fish Blue Fish Dr. Seuss
The King's Wish Benjamin Elkin
Book of Riddles Bennett Cerf
Green Eggs and Ham Dr. Seuss
Put Me in the Zoo Robert Lopshire
Are You My Mother? P.D. Eastman
Ten Apples Up on Top! Dr. Seuss
Go, Dog, Go! P.D. Eastman
Little Black, A Pony Walter Farley
Look Out For Pirates! (alive) Iris Vinton
A Fish Out of Water Helen Palmer
More Riddles Bennett Cerf
Robert the Rose Horse Joan Heilbroner
I Was Kissed by a Seal at the Zoo (alive) Helen Palmer
Snow P.D. Eastman
The Big Honey Hunt (alive) Stan Berenstain
Hop on Pop Dr. Seuss
Dr. Seuss's ABC
Do You Know What I'm Going to Do Next Saturday? (alive) Helen Palmer Geisel
Summer Alice Low
Little Black Goes to the Circus (alive) Walter Farley
Book of Animal Riddles Bennett Cerf
Why I Built the Boogle House (alive) Helen Palmer
The Bike Lesson Stan Berenstain
How to Make Flibbers Robert Lopshire
Fox in Socks Dr. Seuss
The King, the Mice and the Cheese (alive) Nancy Gurney
I Wish that i Had Duck Feet Dr. Seuss
The Bears' Picnic Stan and Jan Berenstain
Don and Donna Go To Bat Al Perkins
You Will Live Under the Sea (alive) Fred Phleger
Come over to my House (alive) Dr. Seuss
Babar Loses His Crown (alive) Laurent de Brunhoff
The Bear Scouts Stan and Jan Berenstain
The Digging-est Dog Al Perkins
The Travels of Doctor Dolittle (alive) Al Perkins
Doctor Dolittle and the Pirates (alive) Al Perkins
Off to the Races (alive) Fred B. Phleger
The Best Nest P.D. Eastman
The Bears' Vacation Stan and Jan Berenstain
Chitty Chitty Bang Bang! Al Perkins
King Midas and the Golden Touch Al Perkins
The Bears' Christmas Stan Berenstain
Tubby and the Lantern Al Perkins
Tubby and the Poo-Bah Al Perkins
The Bears' Almanac Stan & Jan Berenstain
Wacky Wednesday Dr. Seuss
The Bear Detectives Stan Berenstain
Because a Little Bug Went Ka-Choo! Dr. Seuss
Oh, the Thinks You Can Think! Dr. Seuss
Please Try to Remember the First of Octember! Dr. Seuss
I Can Read With My Eyes Shut! Dr. Seuss
Oh Say Can You Say? Dr. Seuss
The Missing Dinosaur Bone Stan Berenstain
Maybe You Should Fly A Jet! Dr. Seuss
It's Not Easy Being a Bunny Marilyn Sadler
Spooky Riddles Marc Brown
What Do Smurfs Do All Day? Peyo
The Very Bad Bunny Marilyn Sadler
I Want To Be Somebody New! Robert Lopshire
The Black Stallion Walter Farley
I Am Not Going to Get Up Today! Dr. Seuss
The Cat's Quizzer Dr. Seuss
Stop, Train, Stop! Rev. W. Awdry
New Tricks I Can Do! Robert Lopshire
Anthony the Perfect Monster Angelo DeCesare
4 Pups and a Worm Eric Seltzer
Honey Bunny Funnybunny Marilyn Sadler
Come Down Now, Flying Cow! Timothy Roland
Can You Tell Me How To Get To Sesame Street? Elenor Hudson
Roast & Toast Erica Farber/J.R. Sansevere
Monster Munchies Laura Numeroff
Babe: A Little Pig Goes a Long Way Mallory Loehr
The Land Before Time Molly Goode
Riddles and More Riddles Bennett Cerf
Flap Your Wings P.D. Eastman
Some of Us Walk...Some Fly...Some Swim! Michael Frith
Paws and Claws Erica Farber/J.R. Sansevere
A Crack In The Track Rev. W. Awdry
Big Dog... Little Dog P.D. Eastman
Go, Train, Go! Rev. W. Awdry/Elizabeth Terill
Fred and Ted Go Camping Peter Anthony Eastman
Mrs. Wow Never Wanted A Cow Martha Freeman
Fred and Ted Like To Fly Peter Anthony Eastman
The Belly Book Joe Harris
Trains, Cranes and Troublesome Trucks Rev W. Awdry
Have You Seen My Dinosaur? Jon Surgel
Fred and Ted's Road Trip Peter Anthony Eastman
A Pet Named Sneaker Joan Heilbroner/Pascal Lemaitre
Squirrel on Skis J. Hamilton Ray