Other Scheme specifications are also available online. John Cowan maintains the source of the R7RS and he has chased down and collected all the other Scheme specifications (except the IEEE edition and the JFP edition). R5RS errata are maintained by Richard Kelsey.
We now have the version of R6RS with the errata corrections. Are there Git repos with corrected versions of the other documents?
Quoting from https://weinholt.se/scheme/r6rs/
We now have the version of R6RS with the errata corrections. Are there Git repos with corrected versions of the other documents?