The Lee J. Ames papers contains production material for books written and illustrated by Ames.

The collection consists of one original illustration and three page proofs for two children's books by Leo Lionni.

Leo Politi's collection contains art and production materials for multiple titles illustrated by Politi, as well as miscellaneous artwork.

The collection includes illustrative materials for children's books illustrated by Weisgard, as well as other related illustrative materials.

The collection contains an illustrator's dummy for one picture book illustrated by Steven.

Collection contains material related to one book designed by Leslie Tillett.

Collection contains typescripts, correspondence, and illustrative material for one picture book by Leslie Tryon.

The Lilian Robertson Collection contains illustrative material for two children's books published in the late 1940s.

Collection includes typescripts and illustrations for children's books created by Lillian Hoban.

The Linda Allen Collection contains two watercolor illustrations, one from a book, and the other unpublished.

The collection contains pencil and watercolor illustrations for children's book illustrated by Shute.

The collection contains illustrations for children's books illustrated by Lizzy Rockwell.

The collection contains art and production material for one children's book created by Goff.

This collection contains graphic materials, research, and papers related to works illustrated and works written and illustrated by Lois Ehlert.

Collection contains one drawing for a title illustrated by Lorence F. Bjorklund.

This collection contains original artwork as well as prints and final copies of some work. There is art from the creator’s work as a children’s book illustrator as well as art from her personal life.

Louis Slobodkin's papers focus on his work as an author and illustrator of children's books. The collection contains production material for various titles published between 1943-1972, as well as some miscellaneous material and artwork.

Collection contains production material, including illustrations, for three publications by Lucille Corcos.

Collection contains illustrations and endpapers for one children's book illustrated by Wells.

Collection contains illustrations and related material for one children's book illustrated by Lydia Cooley Freeman (as Lydia Cooley).

The Lydia Rosier Collection contains illustrative production material for the jackets of two children's books.

The Lyla Hoffine Collection contains typescripts and production materials for children's books written by Hoffine, as well as some biographical material.

The collection includes materials related to children's book created by Lynd Ward, including illustrations in a variety of media, studies, sketches, dummies, prints, proofs, and other related items.

The collection primarily contains material related to creation of book The Three Trolls by Mabel Farmer, which was unpublished in her lifetime but was published by her son, Edward Farmer, in 2016.

Collection includes illustrative material for one children's book illustrated by Lee.

The collection holds illustrative material for a dozen children's books illustrated by Marcia Sewall.

The Margaret Ayer Collection contains one watercolor and pencil study.

The collection contains 5 ink prints for one book illustrated by Barbour.

This collection contains sketches and studies related to two children's books illustrated by Margaret Bloy Graham.

Collection contains ink and pencil sketches and illustrations for one nonfiction children's book.