# Union Pacific FEF series

> three classes of American 4-8-4 locomotives

**Wikidata**: [Q2467690](https://www.wikidata.org/wiki/Q2467690)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Union_Pacific_FEF_series)  
**Source**: https://4ort.xyz/entity/union-pacific-fef-series