A site I just googled:
http://reviews.ebay.com/Removing-Com...00000003837863
Check others, too, by googling vintage textile soak. It sounds like you have a real task ahead, both challenging and precious.
I have my own christening dress from 67 years ago! I'm scared to even take it out of the acid-free tissue for feat it will just disintegrate. It was tissue thin batiste to begin with all those years ago. Thank you for causing me to think of it after many years!
Jan in VA