Alda is the author of 15 children's books, including the best seller, Sheep, Sheep Sheep, Help Me Fall Asleep (Doubleday Books for Young Readers, 1992), Arlene Alda's 1,2,3 (Tricycle Press 1998), which won an American Library Notable citation, The Book of ZZZs (Tundra 2005), Did You Say Pears? (Tundra 2006) and Except the Color Grey (Tundra 2011). She also wrote the popular Hurry Granny Annie (Published by Tricycle Press in 1999) as well as Hold the Bus (Published by Troll Press in 1996), Iris Has a Virus (2008) and Lulu's Piano Lesson (2010). For much, but not all, of her career as an author, she has provided her own photography as illustrations used in her children's books.