English: Chicago Burlington & Quincy Railroad 2-8-2 Class O-1-A 4994 presumed at Philadelphia, Pennsylvania on an unknown day in October 1923, photograph by Baldwin Locomotive Works, Chuck Zeiler collection. Number 4994 was built in October 1923 (c/n 57113), one of 60 (road #'s 4940-4999) in the last order for 2-8-2's by the CB&Q. It was equipped with an Elesco feedwater heater and Hodges trailing truck with the front swing links coupled directly to the equalizing bars, and the rear ones were coupled to castings that were bolted to the rear engine frame.

Number 4994 survives as FW&D 401. In the 1960's the FW&D decided to donate a steam locomotive to Texas Tech University, only to discover that all its steamers had already been scrapped. Number 4994 was acquired from parent CB&Q, and repainted to FW&D 401 (401 was an oil burner, 4994 was a coal burner). It is currently on display as part of the National Ranching Heritage Center in Lubbock, Texas.

Hol Wagner explains the extra long tender frame: In 1923 the ever-frugal Q was planning to increase the water capacity of a number of its O-3 and M-2/M-2-A engines by lengthening their tenders, so it had Baldwin deliver new O-1-A Mikes 4940-4999 with tender underframes long enough to fit the lengthened tenders of the O-3s and M-2 engines. The underframes were then swapped out as the lengthening was completed. This means most of the 4900s ran for at least a short time with the back porch tenders. The new O-1-As received the tender underframes from the O-3s and M-2s/M-2-As that got their tenders lengthened and rode on the new underframes that Baldwin had delivered under the O-1-A tenders.