History of Space Exploration: Chapter 10, Exercise 2 — Possible Solution
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CLAIMS AND CHECKS
- First commercial cargo to the ISS (May 2012): compare NASA's account.
- First recovery of an orbital-class first stage (December 2015; the other
  article gives 21 December): check the launch record.
- First relaunch of a payload-carrying orbital rocket (SES-10, March 2017):
  check earlier reflights, including the Shuttle's partial reuse.
- First private company to send astronauts to the ISS (May 2020): check
  Crew Dragon Demo-2 against NASA records.

All are the SpaceX article's wording and were not checked against other sources.