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Here's an interesting variation on the railroad tie load. These ties have yet to be coated with creosote - a thick oily preservative. The untreated ties are en route to a creosoting plant near Northumberland, Pennsylvania. Then they'll be reloaded and sent back to the railroad for use on track projects all around the system.
A load like this would be easy to make for a model. Precut ties used for handlaid track are available in most scales. You could also cut your own from scale lumber. Whereas treated ties are usually neatly stacked, these appear to have been loaded a little more loosely.
Despite advances in concrete ties, the wooden cross tie is still a common sight on railroads all around the world, making this a great load for almost any era or setting.