Lucy Fitch Perkins (1865-1937) was an American illustrator and writer of children's books. Fitch started to write children's fiction on a freelance basis for Young Folks. In 1906, she published her first work, The Goose Girl, a collection of children's rhymes. A year later, she followed with A Book of Joys: A Story of a New England Summer, but both works had limited popular appeal. In 1911, she published The Dutch Twins, her first major work. The book was inspired by friend Edwin Osgood Grover, who saw a picture Perkins drew of a pair of Dutch children. Grover suggested to Perkins that she design a series centered around the twins. Perkins took the advice, and the Twins series were a popular success.

She published 26 books in the Twins series for the Houghton Mifflin Company.