Atlas’ newest Master Line structure is the HO Scale Middlesex Manufacturing Company. Its design is based on a well-known landmark in New Jersey that was built in 1883 and continued operations until well into the 1990s. Railroad tracks originally built by the Pennsylvania Railroad lie adjacent to the building. These tracks were used to transport raw materials in via train to be processed by its some 350+ workers, which were then again shipped by rail in their finished forms to their destinations. Based on the original four-story brick building, the Middlesex Manufacturing Company features eight chimneys, a loading dock, elevator tower and entry stairway. On the track-facing side are several loading doors for boxcars to load and unload their freight through. Optional window blanks to brick out the windows and window vents will be included with the model.

Currently, the building site is being used for condominiums, making this model a fine tribute to the now demolished historical edifice.