Old No. 7 was the last steam locomotive to operate over the Amador Central Railroad between Ione and Martell. The twelve mile long railroad lies entirely within Amador County and is one of the shortest railroads in this country.
Iron Ivan is a fine example of one of the early steam locomotive produced by the Baldwin Locomotive Works. This engine was manufactured in January 1901 and was brought to Amador Central Railroad from the McCloud River Railroad in 1937.
The last trip was made by this engine was made between Ione and Martell in 1956.