The Complete Francis of Assisi by Jon M Sweeney

The Complete Francis of Assisi offers the best introduction to St. Francis yet available between two covers. 
 

"There are numerous books claiming to be the writings and even the complete writings of St. Francis available, but this edition from Paraclete Press would seem to be the best and most authoritative for the general reader in this anniversary year." -The Irish Catholic

There are many editions of the writings of St. Francis, and biographies about him, but here in this volume are BOTH. 

The Complete Francis of Assisi is actually a collection of three books in one.

The Little Flowers, this classic collection of charming tales about the life of Francis of Assisi and his early companions did more to establish the legend of this man than any other work; 

Francis of Assisi in His Own Words: The Essential Writings includes his letters, prayers and monastic rules -- important documents of the early Franciscan movement.
The Road to Assisi is Paul Sabatier's ground-breaking and foundational biography of the saint, first published in French in 1894 and re-issued and expanded in 2002.

"Saint Francis of Assisi is easily one of the most recognized saints, right up there in popularity and appealing warmth with Santa Claus. The Complete Francis of Assisi seeks to create a loving, inspiring portrait of the man who abandoned his father's riches to wander the Italian countryside, ministering to lepers and preaching to birds. The editor-translator's clear love for his subject shines through, and the readers are left feeling they have spent some quality time with the man who continues to inspire us." --Christine Engel, Booklist