I just found out that Family Tree DNA is offering a special on their 12 marker Y-chromosome DNA for $39!
If there is any Coltrane male who would like to do this, I would really appreciate it. As the administrator of the Coltrane/Coltrane/Coltrin project, such an addition always is helpful. Right now I have only 3 men from David Coltrane of Rowan County, 3 men from James Coltrain of Martin County and 6 men from my family (John Coltrain of Wareham, MA). Any addition improves the quality of the research. This test typically is much more expensive. Let me know if you are interested.