Mark Twain: A Biography. Volume I, Part 1: 1835-1866

Mark Twain: A Biography. Volume II, Part 1: 1886-1900

The Boys' Life of Mark Twain

Mark Twain: A Biography. Volume II, Part 2: 1886-1900

Hollow Tree Nights and Days

The Bread Line: A Story of a Paper

The Hollow Tree Snowed-in Book

The Mystery of Evelin Delorme: A Hypnotic Story

Dwellers in Arcady: The Story of an Abandoned Farm

A Little Garden Calendar for Boys and Girls

Mr. Turtle's Flying Adventure. Hollow Tree Stories

The Van Dwellers: A Strenuous Quest for a Home

The Autobiography of a Monkey

How Mr. Rabbit Lost his Tail. Hollow Tree Stories

Mr. Rabbit's Wedding. Hollow Tree Stories

The Car That Went Abroad: Motoring Through the Golden Age

Making Up with Mr. Dog. Hollow Tree Stories

The Ship-Dwellers: A Story of a Happy Cruise

A Short Life of Mark Twain

A Short Life of Mark Twain