OMAHA, Neb.–(BUSINESS WIRE)–In another historic first, Union Pacific’s Big Boy No. 4014 will take to the rails this November for a limited holiday tour in support of the Make-A-Wish Foundation, with the world’s largest operating steam locomotive set to be on display Nov. 21 in the Denver, Colorado, area. This will be Big Boy’s first-ever holiday tour and comes several months after the beloved 1941-era steam locomotive completed its historic coast-to-coast tour from California to New York, cul