Édouard Goursat's three-volume
A Course in Mathematical Analysis remains a classic study and a thorough treatment of the fundamentals of calculus. As an advanced text for students with one year of calculus, it offers an exceptionally lucid exposition.
Volume 1 covers applications to geometry, expansion in series, definite integrals, and derivatives and differentials. Volume 2 explores functions of a complex variable and differential equations. Volume 3 surveys variations of solutions and partial differential equations of the second order and integral equations and calculus of variations.
All volumes are 55/8 x 81/2, hardbound editions.
Volume 1: 1904 ed. Index. 52 figures. 560pp. 0-486-44650-6
Volume 2: 1916 and 1917 eds. Index. 39 figures. 576pp. 0-486-44651-4
Volume 3: 1956 ed. 28 figures. 752pp. 0-486-44652-2