There were three Steam Turbine Electric designs built.
The first was made by General Electric for Union Pacific (two units, 2500 HP) in 1939. These units apparently used some type of liquid fuel, probably "Bunker C". They were tested for a few weeks and returned to the builder as unsuccessful. They were both used by the Great Northern railway for a time during World War 2 and were returned to GE in 1943.
The second and third Steam Turbine Electric designs were built by Baldwin using Westinghouse electrical systems.
The first Baldwin design was built for the Chesapeake and Ohio Railroad (3 units, Road Numbers 500-502, 6000 HP). As far as I can find, they were never used in revenue service and were scrapped in 1950.
The second Baldwin design was built in 1954 for the Norfolk and Western (1 unit, Road Number 2300, the "Jawn Henry") The N&W unit was used until 1958 and was the most successful of the three designs, but none of these designs could compete with the contemporary Diesel Electric designs because of maintenance issues and related expenses.
Both of the Baldwin designs used Coal for fuel.
During World War 2, the Swiss railroads converted some of their Steam Engines (mostly switchers) to operate from the catenary which their Electric Locomotives used. This was done due to wartime shortages of Coal and other fuels.
Mark