Mathematics
Calculus Made Easy
Einstein Theory of Relativity
First Fifty Digits of Pi
Foundations of Geometry
Fourth Dimension
Fourth Dimension Simply Explained
Introduction to the History of Science
Letters on Different Subjects in Natural Philosophy, Volume 1 (Letters to a German Princess)
Mathematical Problems
Miscellanea Curiosa, Vol 1
Passages from the Life of a Philosopher
Philosophy and Fun of Algebra
Prime Numbers
Science - History of the Universe Vol. 8: Mathematics
Short Account of the History of Mathematics
Tangled Tale
Ultimate Foundation of Economic Science
Use of Knowledge in Society