For those who are interested in the long term preservation of the breed and why it is that the Basenji Club of America has petitioned AKC to open the stud books for the next 5 years to Native Stock imported from Africa, I have started this thread.
A great place to start to learn about the Basenji breed and the basenjis that are the Founder is the African Stock Project Library, http://www.basenji.org/african/library.htm
There are several ways to look at how well we are doing at preserving the contribution of these founders. One way is to look at the total percentage contribution of these dogs which Lisa Corell Auerbach did several years ago though I am not sure where it was published. Another is to look at male tail and female tail lines. The loss of tail lines is quite significant and they can never be gotten back. One example is Fula of the Congo who still has a significant total percentage contribution but there is only 1 breeder who has her female tail line and it was nearly lost because they very nearly didn't continue with the last female.
If anyone wants to talk about the importance of new Founders, researching their tail lines, and other genetic diversity issues, I think it would be best to move these discussions to this thread.