The spring 2006 season is a big one for children's books—it has the greatest number of titles with a first printing of 100,000 copies or more since we started keeping track, back in spring 2004.

Lilly's Big Day by Kevin Henkes is the highly anticipated sequel to Lilly's Purple Plastic Purse, and its first printing of 500,000 copies shows that its publisher, Greenwillow, is expecting plenty of Lilly fans to scoop the book up. Another feisty heroine, Olivia, returns in Ian Falconer's Olivia Forms a Band (Atheneum, 400,000). Lane Smith gives the nation's forefathers his own distinctive spin in John, Paul, George and Ben (Hyperion, 250,000). Artemis Fowl creator Eoin Colfer has Half-Moon Investigations (Hyperion/ Miramax, 175,000), and James Patterson offers his second book in his Maximum Ride series, School's Out—Forever (Little, Brown, 450,000). Plenty of other books, as you'll see, are getting the star treatment, and only time will tell if publishers have predicted the public's interest correctly.

March

March 1
ttfn by Lauren Myracle (Abrams/Amulet, $16.95). 150,000 first printing.

March 14
Magic Tree House #35: Night of the New Magicians by Mary Pope Osborne, illus. by Sal Murdocca (Random House, $11.95). 300,000 first printing.
Septimus Heap, Book Two: Flyte by Angie Sage (HarperCollins/Tegen, $17.99). 200,000 first printing.

March 20
Goodnight Kisses by Barney Saltzberg (Harcourt/Red Wagon, $8.95). 100,000 first printing.

March 27
Half-Moon Detectives by Eoin Colfer (Hyperion/Miramax, $16.95). 175,000 first printing.

March 28
Lilly's Big Day by Kevin Henkes (Greenwillow, $16.99). 500,000 first printing.
The Princess Diaries, Vol. VII: Party Princess by Meg Cabot (HarperCollins, $16.99). 200,000 first printing.

April

April 1
John, Paul, George and Ben by Lane Smith (Hyperion, $16.99). 250,000 first printing.
Don't Let the Pigeon Stay Up Late! by Mo Willems (Hyperion, $12.99). 150,000 first printing.
The Warrior Heir by Cinda Chima (Hyperion, $16.99). 100,000 first printing.
Percy Jackson and the Olympians Book Two: The Sea of Monsters by Rick Riordan (Hyperion, $17.95). 100,000 first printing.

April 4
Warriors: The New Prophecy #4: Starlight by Erin Hunter (HarperCollins, $15.99). 100,000 first printing.

April 6
Just Listen by Sarah Dessen (Viking, $17.99). 100,000 first printing.

April 11
Encyclopedia Prehistorica: Sharks and Other Sea Monsters by Robert Sabuda and Matthew Reinhart (Candlewick, $27.99). 300,000 first printing.
Grandpa's Little One by Billy Crystal, illus. by Guy Porfirio (HarperCollins, $16.99). 250,000 first printing.
Heat by Mike Lupica (Philomel, $16.99). 200,000 first printing.
Stink and the Incredible Super-Galactic Jawbreaker by Megan McDonald, illus. by Peter H. Reynolds (Candlewick, $12.99). 100,000 first printing.

April 17
Seeker by William Nicholson (Harcourt, $17.00). 100,000 first printing.

April 20
Terias the Oracle by G.P. Taylor (Putnam, $17.99). 100,000 first printing.
Ark Angel by Anthony Horowitz (Philomel, $17.99). 100,000 first printing.

April 25
The Prophet of Yonwood: The Third Book of Ember by Jeanne DuPrau (Random House, $15.95). 350,000 first printing.
Fly by Night by Frances Hardinge (HarperCollins, $16.99). 200,000 first printing.
Disney's Cars: A Read Aloud Storybook (Random House, $8.99). 150,000 first printing.
Startled by His Furry Shorts by Louise Rennison (HarperTempest, $16.99). 125,000 first printing.
Once I Ate a Pie by Patricia MacLachlan and Emily MacLachlan Charest, illus. by Katy Schneider (HarperCollins/Cotler, $15.99). 100,000 first printing.
Another Nastybook: The Curse of the Tweeties by Barry Yourgrau (HarperCollins/Cotler, $11.99). 100,000 first printing.
Russell and the Lost Treasure by Rob Scotton (HarperCollins, $15.99). 100,000 first printing.
Behind the Curtain: An Echo Falls Mystery by Peter Abrahams (HarperCollins/Geringer, $15.99). 100,000 first printing.
Jumping the Scratch by Sarah Weeks (HarperCollins/Geringer, $15.99). 100,000 first printing.

May

May 1
Don't Let the Pigeon Stay Up Late! by Mo Willems (Hyperion, $12.99). 150,000 first printing.
Land of Elyon Book III: The Tenth City by Patrick Carman (Orchard, $11.99). 125,000 first printing.

May 2
Play, Mozart, Play by Peter Sís (Greenwillow, $16.99). 100,000 first printing.
The Great American Mousical by Julie Andrews Edwards (HarperCollins/ Julie Andrews Collection, $15.99). 100,000 first printing.

May 4
Walter the Farting Dog Goes on a Cruise by William Kotzwinkle, Glenn Murray and Elizabeth Gundy, illus. by Audrey Colman (Dutton, $16.99). 100,000 first printing.

May 9
Mercy Watson Goes for a Ride by Kate DiCamillo, illus. by Chris Van Dusen (Candlewick, $12.99). 150,000 first printing.
Where's Waldo? The Great Picture Hunt by Martin Handford (Candlewick, $14.99). 150,000 first printing.
Snow, Fire, Sword by Sophie Masson (HarperCollins/Eos, $15.99). 100,000 first printing.

May 16
Pendragon #7: The Quillan Games by D.J. MacHale (S&S, $15.95). 150,000 first printing.

May 23
Maximum Ride #2: School's Out—Forever by James Patterson (Little, Brown, $16.99). 450,000 first printing.
Junie B., First Grader: Aloha-ha-ha! by Barbara Park, illus. by Denise Brunkus (Random House, $11.95). 200,000 first printing.
Sweet Sixteen Princess by Meg Cabot (HarperCollins, $8.99). 100,000 first printing.
I Love Trains! (board book) by Philemon Sturges (HarperFestival, $6.99). 100,000 first printing.

May 30
Infernal Devices by Philip Reeve (HarperCollins/Eos, $16.99). 100,000 first printing.

June

June 1
Gideon the Cutpurse by Linda Buckley-Archer (S&S, $17.95). 200,000 first printing.
Pirates of the Caribbean 2: Dead Man's Chest: The Movie Storybook (Disney Press, $8.99). 175,000 first printing.
Charlie Bone and the Hidden King by Jenny Nimmo (Orchard, $9.95). 150,000 first printing.
Bear's New Friend by Karma Wilson (McElderry, $16.95). 100,000 first printing.

June 6
Olivia Forms a Band by Ian Falconer (Atheneum, $16.95). 400,000 first printing.

June 27
Bittersweet Sixteen by Jill Kargman and Carrie Karasyov (HarperTempest, $15.99). 100,000 first printing.
The Prophecy by Hilari Bell (HarperCollins/Eos, $15.99). 100,000 first printing.

July

July 1
Room One by Andrew Clements (S&S, $15.95). 100,000 first printing.

July 4
A Small White Scar by K.A. Nuzum (HarperCollins/Cotler, $15.99). 100,000 first printing.
What a Day It Was at School by Jack Prelutsky, illus. by Doug Cushman (Greenwillow, $15.99). 100,000 first printing.
Raiders Night by Robert Lipsyte (HarperTempest, $15.99). 100,000 first printing.

July 15
Peter and the Shadow Thieves by Dave Barry and Ridley Pearson, illus. by Greg Call (Disney Editions/Hyperion, $18.99). 350,000 first printing.

July 25
Eats, Shoots & Leaves: Why Commas Really Do Make a Difference! by Lynne Truss, illus. by Bonnie Timmons (Putnam, $15.99). 250,000 first printing.
Araminta Spookie #1: My Haunted House and #2: The Sword in the Grotto by Angie Sage (HarperCollins/Tegen, $8.99). 100,000 first printing each.
Monster Halloween by David Sheldon (HarperFestival, $7.99). 100,000 first printing.