 Walker worked to exonerate these men, with George F. Franklin, Ella and Thomas P. Mahammitt, John Albert Williams, Millard F. Singleton, M. L. Wilson, and John W. Long playing important roles in rallying local support for the convicts.Walker was also known for working with a number of disreputable professional bondsmen, including "Uncle John" John Flannigan, Olie Jackson and Chase Green.