Helpful Size Charts I use for Knitting and Crochet
Blanket sizes including afghans:
http://www.crochetoneknittoo.org/commonsizes.php
and
http://www.bevscountrycottage.com/size-chart.html#blanket
Head Size Chart:
http://www.bevscountrycottage.com/size-chart.html
http://www.bevscountrycottage.com/size-chart.html#baby
http://www.bevscountrycottage.com/size-chart.html#foot
Basic Beanie – shows sizes for baby thru adult ribbed beanie hats:
http://www.p2designs.com/images/patterns/HatBasicBeanie.html