German knitted rug (1751) - according to Richard Rutt's History of Handknitting these were sometimes made as 'masterpieces' as part of qualifying for craft guilds and sometimes for customers. I cannot imagine knitting anything so intricate!
Sampler, German (nineteenth century) There are more here, incredibly beautiful items. The V&A in London has a good collection of them too
Sweater, American (1895) I could see something like this working today, a very dramatic silhouette
There is vastly more to look through, so much detail of the history of knitting