Crochet Circle Pattern

This vintage pattern is made available by Free Vintage Crochet.

This pattern is given for a small doily, but it can be crocheted to as big as needed simply by following the gradual increases in the pattern. Personally, I think this would make for a nice overlay on a hotpad, but you could easily crochet an entire afghan.

The pattern does not specify, so I imagine this can be crocheted with any yarn and hook size.