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Orthogonal to its usefulness for learning C, K&R (especially K&R 1) deserves to be kept around to serve as an aspirational model for clear and concise technical writing.

There's more real material in that slim book than in many a thousand page doorstop out there, yet at the same time it's easy to follow.

I'll add The Unix Programming Environment, by Kernighan and Pike. Like K&R, the examples it picks "happen" to teach so much more than you came to learn :), e.g. anatomy of version control, some language design, basics of interpreters & compilers.

and also by Dennis Ritchie (dmr), designer of C. but i think kernighan wrote most of it

Dude just lops the R off of K&R!