Vern I know that you did say you want to obtain wool felt if this is to match the internal covering of your case you may have a colour match problem any way. Usually the internal cloth used on cases is wool baize because it is hard wearing and not prone to fraying like felt. Though if it is felt that you want e bay is a good place to look also handicraft suppliers because a lot of it is used to make childrens felt toys and it is usually available in various sizes and many colours.

The only lessons in my life I truly did learn from where the ones I paid for!