There were three C&NW cars numbered 555 assigned to subscription club car service on the run to Kenosha. The first was heavyweight coach 555, built in 1913, the second was the former Parlor Car 6515, built by Pullman Standard in 1949. It was assigned to club car service and renumbered 555 in May 1959. The third car was ACF built club lounge 7901, reassigned to commuter service as 7901 in 1961 and later renumbered when second 555 was retired. The 7901 was originally assigned to the Cities Streamliners and later ran on the Peninsula and Flambeau 400s until they were doubled-decked in 1958.