I think you would need to define what you mean by "fabric". Do you mean like stuff their uniforms are made of? Ir just rolled fabric with the logo on it?
In any case, you can try here:
http://shop.mlb.com/shop/index.jsp?c...v_teamdrop_txt
You may need to contact that for what you specifically want.
Just wondering, why bother? Going to be another 85 years ;)