Half-hours with the Telescope

Myths and Marvels of Astronomy

Half-Hours with the Stars / A Plain and Easy Guide to the Knowledge of the Constellations

Half-hours with the Telescope / Being a Popular Guide to the Use of the Telescope as a / Means of Amusement and Instruction

Myths and Marvels of Astronomy

Light Science for Leisure Hours

Pleasant Ways in Science

Flowers of the Sky

Rough Ways Made Smooth

The Pyramid of Cheops