Mechanica 1736
Euler's first book, an extension of Newtonian mechanics.

Methodus inveniendi(Method of Discovery) 1743
A study of flexible and elastic lines and membranes.

Introductio ad analysin infinitorum (Introduction to the Analysis of Infinities) 1748
The first analytical treatment of algebra, the theory of equations, trigonometry, and analytical geometry.

Institution of Differential and Integral Calculus 1755
The first analytical treatment of algebra, the theory of equations, trigonometry, and analytical geometry.

Lettres … une princesse d'Allemagne (Letters to a German Princess) 1768
Euler's main philosophical work which became extremely popular. He covered a whole range of scientific issues including mechanics, optics, acoustics and astronomy.

Institutiones calculi integralis (Introduction to Integral Calculus) 1768
Published in 3 volumes between 1768 and 1772.

Introduction to Algebra 1770
A tranlation appeared in 1840.
