ClassicsRough Ways Made Smooth: A series of familiar essays on scientific subjectsRichard A. (Richard Anthony) Proctor
ClassicsLight Science for Leisure Hours - A series of familiar essays on scientific subjects, natural phenomena, &c.Richard A. (Richard Anthony) Proctor
ClassicsHalf-Hours with the Stars - A Plain and Easy Guide to the Knowledge of the ConstellationsRichard A. (Richard Anthony) Proctor
ClassicsHalf-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
