Paul Fredrick has quite a few.
It looks like they only sell bow ties. Do you know if they can make a traditional necktie?I'd look at Carrott and Gibbs as well (www.greatbows.com). They have a lot of silk and make a lot of ties at a reasonable price. They probably will either have the finished ties available or be able to produce them for you in time for a Sept. Wedding. I'd look at the site to see the silk patterns you might like then give them a call.
Agreed. However, in doing research on tunics and stiff collars, the collars in particular require a special cleaning method that almost no one does anymore, in particular the United States. I agree that a stiff collar would stand up more with the suit, but the limitation of available cleaners combined with their reduced functionality makes me want to move towards a turndown collared shirt and a good pair of collar bones. As I won't be wearing morning dress frequently, my thrifty side tells me to buy something that I can use again (where was it when I bought morning dress?!)I do not know about the ties, but I think you should rather wear a shirt with a detachable collar with morning dress.
Best regards, Dr