Here is the essay structure, followed by what to search for on archive.org to get the evidence.
Unlike modern Super Sentai series, which sometimes receive official international streaming releases or Western adaptations (via Power Rangers ), classic 1970s Showa-era tokusatsu occupies a legal gray area globally. himitsu sentai goranger internet archive free
If you are determined to find free content on the Internet Archive, you may need to look for "fan restorations" rather than official uploads. Here is the essay structure, followed by what