Calculators for Binding, HSTs, and Squares/yd on QuiltPox site.
BarnQuilts.com has photos and a map of Sac County Iowa barns that have an 8-foot square painting of a quilt block. These are on barns more then 50 years old and on other sites in communities. You can see individual photos of each site in the county.
There is also a web page with links to many other barn related websites.
Ohio and Kentucky barns painted with a Quilt Patch; website has links to many barns, gives their location and a map.
Jigsaw Puzzles
There is a Danish website (quilt-patchwork.de) that has been posting interactive jisaw puzzlies made of quilt tops. They have 11 puzzles on the 2006 page and already have 40 puzzles on the 2007 page. And, if you click on the 'Email" option, you can receive an eamil from the website each time another puzzle is posted (I expect the text is in Danish).
Metric Conversions
Hanging Sleeve for Quilt Show