Lucy Fitch Perkins (12 July 1865 – 18 March 1937) was an American children's book author and illustrator, famous for writing the Twins series of books.
Lucy Fitch was born in Maples, Indiana, the daughter of a factory owner and businessman. She studied at the Fine Arts School in Boston, and later taught art at the Pratt Institute in Brooklyn. She worked for a time as an illustrator with the Louis Prang & Company. She married architect Dwight Perkins in 1891; they lived for many years in Chicago.

Lucy Fitch Perkins Books provides the works of Lucy Fitch Perkins as listed below:

The Belgian Twins
The Dutch Twins
The Eskimo Twins
The French Twins
The Japanese Twins
The Puritan Twins
The Scotch Twins
The Spartan Twins
The Swiss Twins

Powerful reader is also provided. You can adjust the size and color of the font as well as the background color. Night reading mode (dark mode) and highlight mode are also provided to make it suitable for reading at nights or when it is dark. When turning pages, the only thing you need to do is to simply slide your fingers. The page you were last reading will be automatically recorded and a bookmark can be inserted to anywhere you like. Also, you can write reading notes regarding to certain contents. In addition, an English dictionary is attached to the book for your word query at any time.