Why Do Birds Sing

Intelligence of Birds

Intelligence of Elephants

History of Cotton, Wool and Textiles

The Talking-Machine: Edison's Telephonic and Acoustic Inventions

History of Printing and Paper-Making

Nebuchadnezzar, Cyrus and Alexander: The Great Conquerors

How the Northmen Discovered America

Florence Nightingale: the Nurse Who Became Famous

Brief History of the Sewing Machine

The Incas : Story of their Astronomy and Civilization

Christianity: What it is not, and What it is

History of Centenarians and Lessons from their Habits

Natural History of Cetacea: Whales and Dolphins

Champollion, the Decipherer of Hieroglyphs: and the Rosetta Stone

Hippocrates: the Father of Medicine

The Maya : Civilization, Customs and Superstitions

How Men Suffered in the Great War: The Book of the Homeless

Thomas Edison: How He Succeeded

Horses and their Domestication