Did you know that the Textile Museum in Washington D.C. runs a program called "Ask-a-Curator, Ask-a-Conservator"?
Ask-a-Curator, Ask-a-Conservator programs are held the first Wednesday of each month (September through May) from 10:30 a.m. to 1 p.m. The program is free for Museum members and $5 for non-members.
If you don't live near, or plan a visit to D.C. in the near future and you have a textile piece that you have questions about - you can go here to the American Institute For Conservation of Historic and Artistic Works. There is a link to find a conservator which would point you the direction of the nearest source of information.