I buy my patterns online at the following sites:
Information on different heirloom and vintage fabric descriptions: http://www.heirloomsewingforchildren.com/fabric_index.htm
I purchase vintage fabrics online at:
Batiste-http://store.marthapullen.com/p-7308-marthas-heirloom-batiste (Martha Pullen also sells batiste on ebay for cheaper by the yard than this).
Colorful linens and silkshttp://www.etsy.com/shop/ramieandlinen
I also found affordable silks and silk blends at www.exoticsilks.com You can go to their website and request any amount of silk samples and they will send them to you free.
3D rose chiffon-Wholeport (China based company; 3 weeks for shipping) http://www.etsy.com/shop/wholeport?ref=seller_info