I used to stop by Celt’s Vintage Crochet every once in awhile to check for updates to this fascinating archive. Lots of crochet patterns, and some knitting designs, from early 20th century publications. And you could browse through them and print them out “free, gratis, and for nothing” (apologies to Alice Beer). Sadly, the owner has decided to close the site. You can read about her reasons here.
This was the site where I found the Hemlock Ring pattern that Jared Flood used as the basis for his gorgeous blanket.
All is not completely lost, though. The Wayback Machine has archived a December 2007 version of the site here, so you can still see most of what was available there. Print out your favourites while the opportunity exists.