• Prince Bertram the Bad (1963)
• A Holiday for Mister Muster (1963)
• Giant John (1964)
• Lucille (1964)
• The Bears of the Air (1966)
• Martha the Movie Mouse (1966)
• The Comic Adventures of Old Mother Hubbard and Her Dog (1968)
• The Great Blueness and Other Predicaments (1968)
• Small Pig (1969)
• Ice-Cream Cone Coot, and Other Rare Birds (1971)
• On the Day Peter Stuyvesant Sailed Into Town (1971)
• Owl at Home (1975)
• Grasshopper on the Road (1978)
• A Treeful of Pigs (1979)
• Fables (1980) (A Caldecott Medal winner)
• Uncle Elephant (1981)
• Ming Lo Moves the Mountain (1982)
• The Book of Pigericks: Pig Limericks (1983)
• The Rose in My Garden (1984)
• Whiskers & Rhymes (1985)
• The Frogs and Toads All Sang (2009) (with, daughter, Adrianne Lobel) ISBN 9-780-06180022-1
• Odd Owls and Stout Pigs: A Book of Nonsense (2009) (with Adrianne Lobel) ISBN 0-06-180054-6

Frog and Toad series

• Frog and Toad are Friends (1970) (ISBN 0-06-444020-6)Stories: "Spring," "The Story," "A Lost Button," "A Swim," and "The Letter"
• Frog and Toad Together (1972) (ISBN 0-06-444021-4)Stories: "A List," "The Garden," "Cookies," "Dragons And Giants," and "The Dream"
• Frog and Toad All Year (1976) (ISBN 0-06-444059-1)Stories: "Down The Hill," "The Corner," "Ice Cream," "The Surprise," and "Christmas Eve"
• Days with Frog and Toad (1979) (ISBN 0-06-444058-3)Stories: "Tomorrow," "The Kite," "Shivers," "The Hat," and "Alone"

Mister Muster series

• A Zoo for Mister Muster (1962)
• A Holiday for Mister Muster (1963)

Mouse series

• Mouse Tales (1972)
• Mouse Soup (1977) ISBN 0-06-023967-0 (Garden State Children's Book Award winner)

• Happy Times with Holiday Rhymes (1958) by Tamar Grand
• My First Book of Prayers (1958) by Edythe Scharfstein, Sol Scharfstein, and Ezekiel Schloss
• The Book of Chanukah Poems, Riddles, Stories, Songs, Things to Do (1959) by Edythe Scharfstein and Ezekial Schloss
• The Complete Book of Hanukkah (1959) by Kinneret Chiel
• Holidays are Nice: Around the Year with the Jewish Child (1960) by Robert Garvey and Ezekiel Schloss
• Red Tag Comes Back (1961) by Fred Phleger
• Something Old Something New (1961) by Susan Rhinehart
• Little Runner of the Longhouse (1962) by Betty Baker
• The Secret Three (1963) by Mildred Myrick
• Miss Suzy (1964) by Miriam Young
• Dudley Pippin (1965) by Phil Ressner
• The Witch on the Corner (1966) by Felice Holman
• The Star Thief (1968) by Andrea DiNoto
• Ants Are Fun (1969) by Mildred Myrick
• I'll Fix Anthony (1969) by Judith Viorst

Books illustrated for Millicent E. Selsam

• Greg's Microscope (1963)
• Terry and the Caterpillars (1963)
• Let's Get Turtles (1965)
• Benny's Animals and How He Put Them in Order (1966)

Books illustrated for Jack Prelutsky

• The Terrible Tiger (1970)
• Circus (1974)
• Nightmares: Poems to Trouble Your Sleep (1976)
• The Mean Old Mean Hyena (1978)
• The Headless Horseman Rides Tonight: More Poems to Trouble Your Sleep (1980)
• The Random House Book of Poetry for Children (1983)
• Tyrannosaurus Was a Beast: Dinosaur Poems (1988)

Books illustrated for Nathaniel Benchley

• Red Fox and His Canoe (1964)
• Oscar Otter (1966)
• The Strange Disappearance of Arthur Cluck (1967)
• Sam the Minuteman (1969)

Books illustrated for Peggy Parish

• Let's Be Indians (1962)
• Let's Be Early Settlers with Daniel Boone (1967)
• Dinosaur Time (1974)

Books illustrated for Lilian Moore

• The Magic Spectacles and Other Easy-to-Read Stories (1965)
• Junk Day on Juniper Street and Other Easy-to-Read Stories (1969)

Books illustrated for Edward Lear

• The Four Little Children Who Went Around the World (1968)
• The New Vestments (1970)

Books illustrated for Charlotte Zolotow

• The Quarreling Book (1963)
• Someday (1965)

Books illustrated for Jean van Leeuwen

• Tales of Oliver Pig (1979)
• More Tales of Oliver Pig (1981)