Recommended reading for writers of research papers:
Knuth/Larrabee/Roberts http://tex.loria.fr/typographie/mathwriting.pdf
Bernstein http://cr.yp.to/writing.html
Goldreich http://www.wisdom.weizmann.ac.il/~oded/writing.html
Tao https://terrytao.wordpress.com/advice-on-writing-papers/
Peyton Jones https://www.microsoft.com/en-us/research/academic-program/write-great-research-paper/
On general writing:
Strunk & White http://www.gutenberg.org/ebooks/37134
Vonnegut https://kmh-lanl.hansonhub.com/pc-24-66-vonnegut.pdf
Zinsser https://www.google.com/search?q=on+writing+well+zinsser+pdf
While I'm at it, career advice pages:
Moxie https://moxie.org/2013/01/07/career-advice.html
Hamming http://www.cs.virginia.edu/~robins/YouAndYourResearch.pdf