Jorge Luján is a prolific and highly respected author and poet. He has worked with many of the world’s greatest illustrators to create an outstanding body of work. Jorge lives in Mexico City. Visit Jorge Luján's website: http://jorgelujan.com/home.htm

Isol is an award-winning author and illustrator, who has been honored with the Astrid Lindgren Memorial Award for her outstanding contribution to children’s literature. She is renowned for creating picture books, which, as noted in the citation from the ALMA jury, are created “from the eye level of the child.” She lives in Buenos Aires, Argentina. Visit Isol's website: http://www.isol-isol.com.ar/ Visit Isol's blog: http://www.isol-isol.com.ar/

SUSAN OURIOU is an award-winning fiction writer and literary translator with over sixty translations and co-translations of fiction, non-fiction, children’s and young-adult literature to her credit. She has won the Governor General’s Literary Award for Translation. Jane, the Fox and Me, co-translated with Christelle Morelli, was named to IBBY’s Honour List. She has also published Nathan, a novel for young readers. Susan lives in Calgary, Alberta.

Luján reinvents numbers through a fanciful lens. . . . clever [and] child-friendly. - School Library Journal

It's an unexpected way of looking at written characters, but one that will make intuitive sense to children. - Publishers Weekly

Numeralia is the melding of artistic endeavor and creativity, conveying staid concepts with the right blend of quirkiness and originality. - CM Magazine