When I was an undergrad (enrolled in 2011) I decided to screw my professors book recommendations and lookup what the internet seemed to think was the best book in each subject and read that instead. Most of them were fairly old. Some examples that I remember off the top of my head:
Intro to CS: SICP (1979)
Algorithms/data structures: CLRS (1989)
Theory of computation: Sipser (1996)
Compilers: Dragon book (1986)
Calculus: Spivak (1967)
Linear Algebra: Dover's by Shilov (1971)
The given year is for the first publication, some of them are still being updated and I probably read a newer edition.
Intro to CS: SICP (1979)
Algorithms/data structures: CLRS (1989)
Theory of computation: Sipser (1996)
Compilers: Dragon book (1986)
Calculus: Spivak (1967)
Linear Algebra: Dover's by Shilov (1971)
The given year is for the first publication, some of them are still being updated and I probably read a newer edition.