Got Alcos? The Nevada Northern Railway certainly does. You are looking at NN Locomotives #109 (closest), a 1950 Alco RS-3, and #201, a recently-repatriated 1951 Alco RSD-4. In addition to this pair, the museum also has Locomotive #105, and RS-2 built in 1949. One of the great things about this museum is that most of their stuff actually runs and there are plans in place to eventually get most of the non-running equipment operational. Right now, both the 105 and 109 are operable and see regular use. As noted, the 201 was recently repatriated from a railway museum in Washington State. It's not a "runner" right now, but there are relatively short-term plans to address that issue. What you can't see in this photo is that the museum crew has already assembled a "punch list" of things that the 201 needs and that work will commence this year. The 201 is one of two, historic diesel-electric locomotives which recently became available to the Nevada Northern Railway Museum and both were the object of fund-raising efforts to bring them home. Unlike the surviving steam engines, the diesel locomotives which were still on the roster when the original railroad shut down in 1983 still had some life left in them and were still saleable commodities. As such, some of them found second or third careers at other railroads....and eventually retirement to museums in some cases.
Another cool thing about the Nevada Northern Railway Museum is the ambience of the engine house. That smoky haze you see hanging in the rafters is something you just cannot duplicate in a conventional museum hall. It's a combination of coal smoke, steam, diesel exhaust and other particulate matter which seems to just hang in the ceiling spaces of this massive facility, long after the last engine has been put to bed.