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At least is not difficult. The usual insulation for two-rail operation should be done at switches, as in standard two-rail track. For remote control, only for switch machines can be hidden under the baseboard with the switchstand there available, but construction of others appearance. tigure 29. The old Frcdciitk suiLion on the B ^ O opened Dec. 2, 1S31. m. adequate for the years of railroading most depots were plain, utilitarian, and then provided. Most of those existing in 1860 were, with a facilities few exceptions, good examples of simple construction, making their duplication in miniature relatively easy.

In 1863 Congress authorized the Washington and Alexandria Railroad to build an additional structure along the east side of the bridge for its own uses and to be operated as a military railroad. In 1870 the bridge was taken over by the Baltimore and Potomac Railroad. CHAPTER II Track Construction: Actual & Scale AT THE BEGINNING OFTHE 1860s, track and roadbed were not yet, except for a very few larger railroads, what might be defined as standard. Rail was mostly of the so-called / A. A. pear-section type, roughly similar to what would soon be called T rail.

A typical stub switch is shown in scale (Figure 22) and is simple to build. It may be which is necessary to build the frog from rail if the radius of the curve is less than 3 feet, is illustrated stands switch of types of the one about the smallest available in castings. At least is not difficult. The usual insulation for two-rail operation should be done at switches, as in standard two-rail track. For remote control, only for switch machines can be hidden under the baseboard with the switchstand there available, but construction of others appearance.