I spent years writing back and forth to a wonderful lady named Kathleen Corley Mason who finally stopped writing because she lost her sight. She authored a book on Vance Family History, 'The Vance and Taylor Families'. She and a few others authored a news letter and held regular meetings and trips through the Vance Family Association. You can order films of archived news letters which are informative through Family Search.org
I was privileged to work with a few of them in determining the McAnulty line that married into the Vance Family in South Carolina. I loved pouring through books, censuses, and periodicals to find the information. It is amazing how much research has grown in the last 5 years.
The Vance line has an archive now on Rootsweb.com This is a link to one of them.
There is also the beginning of a new Vance Association Online.
This is not the same people that I wrote back and forth with. I imagine some of the older researchers are still working diligently, but many had not made the transition to computers, they still wrote letters. I still write, if the need is there.
Ruth, I hope this helps some on the Vance lines you are working on. If you would like give me some dates, I will look in my book for you.