Timeline of Plastic Use

[Skywatcher]

This thread reminded me of when I temped at the HQ of a worldwide membership organization ~30 years ago:

@Skywatcher

Their mainframe software, and presumably the mainframe itself, dated from 1977. And the dumb terminals were so old, they were encased in wood! The only way I know this is from one that had a chipped corner. The cases appeared to be plastic, but they were really wood!