Rachel Vail, born on July 25, 1966 in Manhattan. She is an author of children's and young adult books. She grew up in New Rochelle, New York, and is a graduate of Georgetown University. Her debut novel Wonder won an Editor's Choice award from Booklist in 1991, and in 1992 her second novel, Do-Over, won that award also. She has authored several series which include Friendship Ring, Mama Rex and T, If We Kiss, and Avery Sisters Trilogy.
Avi was born in 1937, in the city of New York and raised in Brooklyn. He began his writing career as a playwright, and didn't start writing childrens books until he had kids of his own.