EMD's newest locomotive, the SD70ACe, GM 70, was being tested prior to being sent west to the AAR Test Facility in Pueblo Colorado. GM 70 is one of three prototype Tier-2 locomotives that EMD has completed to compete with GE's new Evolution locomotive.
Photos taken on or around important historical moments - the first runs of various locomotive models, the day before/of big mergers, or other big historical events, etc.