Technically, no. Sailor Moon is copyrighted by Naoko Takeuchi, Kodansha, and Toei Animation. The Internet Archive operates under the DMCA's "safe harbor" provisions, meaning they remove content when a rights holder files a formal takedown request.
Useful item types and what they offer
This "Dic Dub" (named for the distributor, DiC Entertainment) is considered a war crime by purists, but a beloved childhood memory by millennials. Officially, it is out of print. You cannot buy it legally on modern Blu-ray. You cannot stream it on Hulu or Crunchyroll (which host the Viz redub). sailor moon season 1 internet archive
The Girl Genius is a Monster? The Brainwashing Seminar of Terror (The debut of Sailor Mercury) Technically, no
Regardless of where you watch it, Season 1 (known as the "Dark Kingdom" or "Jewelry Box" arc) is arguably the most emotionally devastating and well-structured season of the entire franchise. Useful item types and what they offer This