Roster-   both Slim and Jess served in the Civil War; what if their path's crossed?" Much thanks to Betty for the beta.
Rota-  sometimes keeping track of a brother and a hired hand takes a lot of effort
Rooster-  hen-yard politics are completely outside the control of the Sherman Relay Station crew.
Rotor-  A stranger enlists the Sherman Relay Station crew for a dangerous task; and sees more in them than they realize.