Need fabric help!!

I got the following email from a sewing acquaintance:

Dear Kat,

Who better could I consult to ask about finding source for specialty black fabric??!!

I may be doing some projects in the next few months that require bombazine (silk/wool blend--frequently used in Vicorian mourning) and black crepe (ditto). . .

Have you ever come across these? I know JoAnn's doen't carry them, but I'm now on a search. . . . any ideas?

OK, guys!  Help me help this woman!  Give me your online resources!