Charles Wolfe and Kip Lornell comment on this in their The Life and Legend of Leadbelly:

"The inmates saw the train as a potent symbol and soon added other verses about prison life and about local incidents concerning the Houston police, including Bud Russell, the "transfer man" who had taken Huddie down to Sugarland. A stanza that Leadbelly almost always sang in his version of the song was:

Bason and Brock will arrest you,
Payton and Boone will take you down,
The judge will sentence you,
And you Sugarland bound.

A.W. Brock was the chief of police in Houston for a time and the team of George Payton and Johnnie Boone was a pair of city detectives who specialized in working the black sections of town. Leadbelly himself had not spent much time, if any, in Houston before his Sugarland stay, so this stanza either dates from years there after his release or was created after hearing other Sugarland inmates describe the conditions in Houston."   (1993:84)