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Great River Literary·US

Agent profile summary

Represents
author-illustratorspicture booksboard booksmiddle gradeyoung adultchildren's books
+1 morepoetry
Looking for
Query Letter, Portfolio Link, Picture Book Dummy, First Three Pages, Bio, Comparison Titles
How to submit
Email
Last checked 19 Jun 2026·Last verified: 19 Jun 2026

Mary Cummings is a literary agent at Great River Literary based in US. Their list focuses on genres including author-illustrators, picture books, and board books. Currently open to submissions, with response guidance listed as Responds only if interested. Submissions via Email. For current guidelines, check the agent's own submission page linked below.

Age Categories

Picture Books, Children's, Middle Grade, Young Adult

Response Time

Responds only if interested

Notes

No attachments, phone queries, postal queries, or adult projects.

Agents with overlapping taste

Jennifer De Chiara Literary Agency

Open
RepresentsChildren's books, picture books, middle grade, young adult, children's nonfiction, mystery, ghost story, poetry, theater
Looking forStephen Fraser is Executive Agent at The Jennifer De Chiara Literary Agency and represents children's books in a wide range of genres. He is looking for good, original writing: picture books with delicious words, enduring middle grade stories with strong characters and plots, young adult novels with identifiable teens and hopeful, interesting stories for the soon-to-be adult, and nonfiction for children, both picture books and longer works, about original, child-friendly topics. He mentions a good mystery, a ghost story, poetry, theater, and work that dazzles him.
How to submitFor children's fiction queries, email Stephen Fraser at fraserstephena@gmail.com with the first 20 pages in the body of the email, plus a one-paragraph bio and one-paragraph synopsis. For nonfiction queries, attach the entire proposal as a Word document, including a sample chapter, and include a one-paragraph bio and one-paragraph synopsis in the email body. JDLA asks writers to query one agency agent at a time and does not accept snail-mail queries.
Last checked 26 May 2026
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Jill Grinberg Literary Management

Open
RepresentsRomantic comedy, women's fiction, ghost stories, thrillers, mysteries, historical fiction, narrative nonfiction, memoir, young adult, middle grade, picture books, graphic novels, children's books
Looking forKatelyn Detweiler is a literary agent at Jill Grinberg Literary Management whose list spans all age groups and categories, with an emphasis on fresh perspectives and strong voices. She looks for voice and quality writing above all else. On the adult side, she wants smart, swoony rom coms, women's fiction with love in many forms, atmospheric ghost stories, thrillers or mysteries with emotional cores and compelling narrators, and sweeping historical or twisty dual-timeline intergenerational sagas. She is open to narrative nonfiction and memoirs that feel intimate, immersive, and as compelling as novels. In YA she likes fresh contemporary with humor and heart, magical realism, fantasy, speculative, historical, and light sci-fi grounded in teen experience. In MG she likes stories that capture the complicated moments of growing up, and she likes picture books that illuminate deeper truths in funny, inspiring, and unconventional ways.
How to submitEmail submissions to info@jillgrinbergliterary.com and address the query directly to Katelyn Detweiler. Use the subject format QUERY: Title of Project by Your Name or Your Book's Age Category and Genre or ATTN: Katelyn Detweiler. Paste the query letter in the email body. For fiction, send the first 50 pages as a docx attachment. For nonfiction, send a query letter and proposal with overview or outline, chapter summaries, comparable titles, a sample chapter, biography, and bibliography. Picture book submissions should include the full text, and graphic novels should include a full pitch package.
Last checked 25 May 2026
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JABberwocky Literary Agency, Inc

Closed
RepresentsPicture books, middle grade, young adult, children's fiction, graphic novels, illustrators, adult genre fiction, pop culture, contemporary fiction, fantasy, horror, novels in verse, middle grade nonfiction, young adult nonfiction
Looking forJordan Hamessley represents diverse children's fiction from picture books through young adult, select adult genre and pop culture writers, graphic novelists, and illustrators. She is looking for stories that bring queer experience to the children's space across all age ranges. For picture books she is only looking for author-illustrators. In middle grade and young adult, she likes contemporary stories with heart and humor, queer joy, cozy or romantic fantasy, horror with ghosts, creepy forests, haunted houses, and murder, children's projects about space exploration, novels in verse, and graphic novel illustrators. In nonfiction, she is primarily looking for middle grade and YA STEM, space, math and science made fun, and underrepresented history including queer history.
How to submitJordan Hamessley is currently closed to queries according to her official linked QueryManager page, even though the JABberwocky agents page still labels her open. When open, submit through her QueryManager page and query only one JABberwocky agent at a time.
Last checked 25 May 2026
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Sanford J. Greenburger Associates

Open
RepresentsPicture books, chapter books, middle grade, young adult, adult fiction, nonfiction, romance, speculative fiction
Looking forAbigail Frank wants weird, expansive books for young readers, including original picture books, chapter books with big personalities, and novels about unforgettable teens falling in love. She is especially interested in author-illustrators, lyrical and inventive picture book texts, distinct visual art, stories by marginalized creators, and select adult projects including visual nonfiction, gift nonfiction, genre-defying nonfiction, lightly speculative fiction, commercial rom-coms, and work about labor and capital.
How to submitQuery Abigail Frank at afrank@sjga.com with the subject line QUERY - project title. Include a brief bio in the cover letter and attach the manuscript or proposal. Visual artists should include a portfolio link. Greenburger accepts email queries only and asks writers not to query more than one Greenburger agent simultaneously.
Last checked 22 Jun 2026
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KO Media Management

Open
RepresentsGraphic novels, picture books, illustrated books, general fiction, authors, illustrators, content creators
Looking forKate represents authors and illustrators for graphic novels and picture books. KO Media welcomes all ages, including children's, middle grade, young adult, and adult, as long as there is a visual or illustrated component.
How to submitEmail query@komediamanagement.com with the subject line Query for Kate Rogers: Title. Paste query and samples only, attachments are not opened. Authors should paste the first five pages, picture book authors should paste the full text, and illustrators or content creators should include a portfolio link.
Last checked 21 Jun 2026
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RepresentsAuthors, illustrators, children's books, picture books
Looking forChildren's book authors and illustrators through Folio Jr. The public page does not list agent-specific interests for this agent.
How to submitReview the Folio submission page and follow the instructions for the selected agent. Do not submit to more than one Folio agent at the same time.
Last checked 19 Jun 2026
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This profile was last verified on 19 Jun 2026. PairPi tracks UK literary agents' submission guidelines against their own websites. If you spot something wrong, please email hello@pairpi.com.