Here is a photo of Big Boy at Pomona - complete with special affects smoke - just before his departure from Pomona.
Big Boy as it Looks at the Pomona
I didn't even know there was a railroad museum in Pomona until the story broke they are giving back one of their treasures to the Union Pacific so it can be restored - and put back in service. Here is the opening of the story on the Trains.com website
The rest of the story is at the Trains.com site and here you can learn more about the Rail Giants Museum in Pomona.
Union Pacific confirms plans to restore Big Boy steam locomotivePublished: July 23, 2013
Union Pacific donated No. 4014 to the historical society Dec. 7, 1961. The locomotive arrived Jan. 8, 1962, at its current display location at the Rail Giants Train Museum in Pomona.