Thanks Deb and Natalie. With some embarrassment I must retract the question. Sources consulted seemed to indicate that Fr. Lebel was CSV but further checking for a confirmation yielded instead a list of "resident pastors" in Bourbonnais and neighboring areas. Lebel's name is among them, as are several others with "C.S.V.," but his name does not carry that indication.
The history of all of this is way out of my area, but I've learned a few things in the process. Thanks again.
Don
Ref: J. Meyer, 1920. History of SS. Peter and Paul's Church, Pilot, Illinois. [s.n.] pp. 205-209.