- eBookMyths and Marvels of AstronomyRichard A. (Richard Anthony) Proctor
- eBookHalf-Hours with the Stars A Plain and Easy Guide to the Knowledge of the ConstellationsRichard A. (Richard Anthony) Proctor
- eBookHalf-Hours with the Stars A Plain and Easy Guide to the Knowledge of the ConstellationsRichard A. (Richard Anthony) Proctor
- eBookHalf-hours with the Telescope Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction.Richard A. (Richard Anthony) Proctor