- Harshorne - Algebraic Geometry
- Bott, Tu - Differential Forms in Algebraic Topology
- Milnor, Stasheff - Characteristic Classes
- Milnor - Morse Theory
- Serre - Linear Representations of Finite Groups
- Fulton - Intersection Theory
I’ll add Milnor’s Topology from the Differential Viewpoint and/or Differential Topology by Guillemin and Pollack.
- Harshorne - Algebraic Geometry
- Bott, Tu - Differential Forms in Algebraic Topology
- Milnor, Stasheff - Characteristic Classes
- Milnor - Morse Theory
- Serre - Linear Representations of Finite Groups
- Fulton - Intersection Theory