It went into service pulling passenger trains on the the Chicago, Burlington & Quincy such as the Ak-Sar-Ben, the Aristocrat and the Black Hawk, eliminating the need to swap one locomotive for another during the trip.
The S-4 was one of the most successful steam locomotive classes operated by the CB&Q. The class was also fast: one was recorded hauling ten standard passenger cars between Cochrane and La Crosse, WI, at 112 mph. One of its sisters, #3002 was streamlined to haul the stainless-steel Zephyrs, and named Aeolus.
No. 3007 was retired in 1961 after a few years in storage and it was donated to the city of Quincy, Illinois, where it was displayed for a time in Quinsippi Island Park, near the Burlington Route's new bridge over the Mississippi River.
It was then moved to Griggsville in late 1979/early 1980.
3007 is now part of the collection at the Illinois Railway Museum, but today funds are being raised to restore it to working order.