screenshot of interactive work, Unfolding Object, by John F. Simon, Jr. (2002)
Guggenheim Museum
OK, nine years is too new to be vintage--thought it was older when the post title was written and now I don't want to change it. Also, not known is whether it works because it's been tinkered with to keep it functioning on current browsers. (Another Simon piece, Combinations, for example, was made before pop-up blockers.)