If you are interested in making your own dresses, blouses, skirts, etc
for the centennial, Vintage
Sewing has a lot of information for you. At first glance it appears
that they are trying to sell books, but if you click on the table of contents
you can go straight to the books online. And if you need fabrics to match,
try Fabrics-Store,
which carries many useful items.
Another good website for patterns, although it is necessary to purchase
them is sensibility.com