Milwaukee Road 1004 is a preserved 4-6-0 steam locomotive built by Baldwin Locomotive Works in September 1901 as a class B4 four-cylinder Vauclain compound locomotive for the Milwaukee Road who numbered it 385.

Like most of the Milwaukee Road's Vaulclain compounds, it was rebuilt as a two-cylinder simple locomotive; for 4335 this happened in February 1920 when it was reclassified as class G8 and renumbered 2604.

In the Milwaukee Road's 1938 renumbering, it received its last number — 1004.

[1] The locomotive was mostly a freight locomotive while working on the Milwaukee Road; A Railroad article from around 1957 believed that Milwaukee Road 1004 was the last steam locomotive to retire and leave the system.

Today, 1004 is preserved non-operational at the Fairgrounds, in Austin, Minnesota.