Can we please add a reference link to earlier documentation about legacy version numbers at https://docs.mongodb.com/manual/reference/versioning/.

Historic information about versioning is available by selecting a specific earlier version of documentation (such as at https://docs.mongodb.com/v4.2/reference/versioning/), but it would be good if users can see or reach this versioning information without knowing what version to select.

Without this, it's more likely that users will use the current versioning information to make decisions about earlier versions where that information doesn't apply.