When I archive a message or voicemail in Google Voice, how can I see it again? Are they all stored in a particular location or folder?
History section in the navigation options on the left-hand side. You can click
History to view everything, or one of the sub-options such as
In the new (2017-01-23) Google Voice, the "Archive" link is in the overflow menu.
In the left menu, click the three vertical dots. "Archive" is the fourth option.