A Child's Book of Natural History.   Fishback, Margaret  (author), Platt & Munk, 1969.
Absolutely Essential Eloise.   Thompson, Kay  (author), Simon & Schuster, 1999.
Algonquin Cat.   Schaffner, Val  (author), Delacorte, 1980.
Angie.   Udry, Jancie May  (author), Harper & Row, 1971.
Animal Garden.   Nash, Ogden  (author), M. Evans & Company, 1965.
Appendix To The I Hate To Cook Book.   Bracken, Peg  (author), Fawcett, 1967.
Beauty And The Beast.   De Beaumont, Marie Leprince  (author), Macmillan, 1963.
Beginning With Mrs. McBee.   Maiden, Cecil  (author), Vanguard, 1960.
Big And Little Creatures.   Edited by Louis Untermeyer, Golden, 1961. A Golden Anthology. HK did the cover and several stories.
Bon Voyage Monsieur Jérémie !  Scarry, Patricia  (author), Editions Des Deux Coqs D'Or, 1971. (This is the French edition of THE JEREMY MOUSE STORY).
Book Of Wishes and Wishmaking.   Emrich, Duncan  (author), Heritage, 1971.
Captain Boldheart & The Magic Fishbone.   Dickens, Charles  (author), Macmillan, 1964.
Christmas Nutshell Library: The Night Before Christmas, A Firefly In A Fir Tree, A Christmas Stocking Story, Andels & Berries & Candy Canes.   Knight, Hilary  (author), Harper & Brothers , 1963. (These four titles were also released separately in a larger format, about 5"x 7" in 1963. (these are extremely rare, especially not ex-lib copies). Also, A Christmas Stocking Story was also re-done and released by Simon and Schuster as a full sized picture book in 2000).
Cinderella.   Knight, Hilary  (author), Random House, 1978.
December Book 1998.   Marcus, Neiman  (author), Fine/Paper Covers - Neiman Marcus, 1998.
Eloise.   Thompson, Kay  (author), Simon & Schuster, 1955.
Eloise At Christmastime.   Thompson, Kay  (author), Random House, 1958. (This book appeared, in full, in the Reader's Digest Family Christmas. This is a thematic bind-up that was done in 1984. The 1999 edition has a new cover and one interior spread has been replaced).
Eloise In Hollywood.  J. David Stem, David N. Weiss, Simon & Schuster, 2005. (HK did only the jacket art).
Eloise In Moscow.   Thompson, Kay  (author), Simon & Schuster, 1959. (The 1999 edition has new jacket art).
Eloise In Paris.   Thompson, Kay  (author), Simon & Schuster, 1957. (The 1999 edition has new jacket art).
Eloise Takes A Bawth.   Thompson, Kay  (author), Simon & Schuster, 2002.
Eloise's Christmas Trinkles.   Knight, Hilary and Kay Thompson  (author), Simon & Schuster, 2007.
Eloise's Guide To Life : How To Eat, Dress, Travel, Behave, And Stay Six Forever.   Knight, Hilary and Kay Thompson  (author), Simon & Schuster, 2000.
Feldman Fieldmouse: A Fable.   Benchley, Nathaniel  (author), Harper & Row, 1971.
Golden Treasury Of Children's Literature.   Edited by Louis UntermeyerGolden, 1967. (HK did a couple of stories).
Gone And Back.   Benchley, Nathaniel  (author), Harper & Row, 1971.
Gourmet Magazine December 1956. Cover.
Gourmet Magazine October 1956. Cover.
Half A Sixpence.   Hodgdon, Allan  (author), Mar-King Publishing, 1963. (Rather than a real "book", this is a souvenir book/program of a Broadway show. HK also did the poster).
Happy Birthday.   Hopkins, Lee Bennett (editor)  (author), Simon & Schuster, 1991.
Haunted House.   Leonard, Marcia  (author), Troll Associates, 1990. (See MIDNIGHT CAT).
Hello, Mrs. Piggle-Wiggle.   Macdonald, Betty  (author), Lippincott, 1957. (The original, published in 1949 was illustrated by Kurt Weise and HK reilllustrated it when he was doing the fourth book in the series in 1957. (The third book Mrs. Piggle Wiggle's Farm was illustrated by Maurice Sendak). (Also, HK's illustrations were not used in the UK editions).
Hilary Knight's Mother Goose.   Golden Press, 1962.
Hilary Knight's A B C.   Knight, Hilary  (author), Golden Press, 1962.
I Hate To Cook Book..   Bracken, Peg  (author), Harcourt Brace, 1960.
I Hate To Housekeep Book: When And How To Keep House Without Losing Your Mind.   Bracken, Peg  (author), Harcourt Brace World, 1962.
I Like It Here.   Amis, Kingsley  (author), Harcourt Brace, 1958. (HK did just the dustjacket, and only on the first American edition).
I Try To Behave Myself: Peg Bracken's Etiquette Book.   Bracken, Peg  (author), Fawcett, 1964.
I'm A Monkey.   Kraus, Robert  (author), Dutton, 1975.
Instant Etiquette Book.   Bracken, Peg  (author), Arlington Books, 1964.
Jeremiah Octopus.   Zilboorg, Margaret Stone  (author), Golden Press, 1962.
Jeremy Mouse Book.   Scarry, Patricia M.  (author), Heritage, 1969.
Matt's Mitt.   Sachs, Marilyn  (author), Doubleday, 1975.
Midnight Cat.   Leonard, Marcia  (author), Troll Associates, 1990. (This was one of four little Halloween board books done for Troll Associates in 1990. see also Haunted House,  Pumpkin Magic and Witches Brew).
Most-Of-The-Time Mazie.   Holl, Adelaide  (author), Xerox, 1974.
Mrs. Piggle-Wiggle.   Macdonald, Betty  (author), Lippincott, 1957. (This book was originally published in 1947 with illustrations by Richard Bennett. HK re-illustrated this title when he did Hello, Mrs. Piggle Wiggle in 1957).
Mrs. Piggle-Wiggle's Farm.   Macdonald, Betty  (author), Lippincott, 1954.
Mrs. Piggle-Wiggle's Magic.   Macdonald, Betty  (author), Lippincott, 1957. (Originally illustrated by Kurt Wiese).
Never Take A Pig To Lunch.   Calmenson, Stephani  (author), Doubleday, 1982.
Owl And The Pussy Cat.   Lear, Edward  (author), Macmillan, 1983.
Parade Today!   Knight, Hilary  (author), Western, 1978. (Parade Today! is actually the text of the illustrated Poster on the copyright page of The Circus is Coming. It is not a book in it's own right).
Pettifur: A Story.   Williams, Jay  (author), Four Winds, 1977.
Pumpkin Magic.   Leonard, Marcia  (author), Troll Associates, 1990. (see Midnight Cat).
Roger. A Most Unusual Rabbit.   Blair, Dorothea W.  (author), Lippincott, 1958.
Runaway Toys.   Hart, Evelyn  (author), No Publisher, No date. (I beleive it was done for Good Housekeeping (maybe McCalls) and was bound into their December issue in 196_).
Screamy Mimi.   Kraus, Robert  (author), Simon & Schuster, 1987.
Side By Side. Poems To Read Together.   Hopkins, Lee Bennett  (author), Simon & Schuster, 1988.
Six Impossible Things Before Breakfast: Stories And Poems.   Farber, Norma  (author), Addison-Wesley, 1977. (This book consists of six illustrated short stories, each illustrated by a different illustrator including HK, Trina Schart Hyman, Tomie dePaola, Charles Mikolaycak and Lydia Dabcovich).
Snorri And The Strangers.   Benchley, Nathaniel  (author), Harper & Row, 1976.
Speaking Of Mrs. McCluskie.   Maiden, Cecil  (author), Vanguard, 1962.
Stories And Poems For The Young.   Untermeyer, Louis  (author), Hamlyn, 1977.
Sunday Morning.   Viorst, Judith  (author), Atheneum, 1992.
Sylvia The Sloth.   Knight, Hilary  (author), Harper & Row, 1969.
Telephone Time : A First Book Of Telephone Do's And Don'ts.   Weiss, Ellen  (author), Random House, 1986.
Ten Tall Soldiers.   Robison, Nancy  (author), Henry Holt, 1991.
That Makes Me Mad.   Kroll, Steven  (author), Pantheon, 1976.
The Best Little Monkeys In The World.   Standiford, Natalie  (author), Random House, 1987. A Step Into Reading Book.
The Circus Is Coming.   Knight, Hilary  (author), Golden Press, 1978. (The Circus is Coming was re-released by Golden Books in 2007 with four new spreads of art and a brand new jacket).
The Golden Picture Dictionary. Lucille Ogle and Tina Thoburn  (author), Golden Press, 1976.
The Good Mousekeeper.   Kraus, Robert  (author), Windmill Books, 1977.
The Mrs. Piggle-Wiggle Treasury.   Macdonald, Betty  (author), Harper Collins, 1995.
The Omelette Book.   Chamberlain, Narcissa  (author), McGraw-Hill, 1976.
The Twelve Days Of Christmas.   Knight, Hilary  (author), Macmillan, 1981.
The Wonderful World Of Aunt Tuddy.   Gury, Jeremy  (author), Random House, 1958.
Tiger's Chance.   Henry, Jan  (author), Harcourt Brace, 1957. (Middle grade novel, HK did cover and interior spot illustrations).
Tortoise And Turtle Abroad.   Gendel, Evelyn  (author), Simon & Schuster, 1963.
Warren Weasel's Worse Than Measles.   Bach, Alice  (author), Harper & Row, 1980.
When I Have A Little Girl.   Zolotow, Charlotte  (author), Harper & Row, 1965.
When I Have A Son.   Zolotow, Charlotte  (author), Harper & Row, 1967. (This was a companion book to When I Have a LittleGirl). This was reissued by Harper in 1985 as When I have a Little Boy to make the companion element clearer. Then it was reissued again as a Flip Flop Book by Calloway Editions in 2000. When I Have a Little Girl on one side, When I have a Little Boy on the other).
Where's Wallce?   Knight, Hilary  (author), Harper & Row, 1964.
Witches Brew.   Leonard, Marcia  (author), Troll Associates, 1990. (see Midnight Cat).
Words And Pictures.   Various  (author), Galley Press, 1985.