The Frisco railroad was born of the Southwest Branch of the Pacific Railroad.  The Pacific Railroad being the predecessor of the Missouri Pacific Lines.  The Southwest branch left the St. Louis to Kansas City route at Franklin (now Pacific) Missouri.  By the end of the civil war, the Southwest Branch was bankrupt.  The state foreclosed and took possession after the road defaulted on state-held mortgage bonds.  The road was sold in late 1866 to a group of investors, and renamed the South West Pacific.  After little more than a year it would be bankrupt and the road sold again - this time to the South Pacific Railroad Company.  This would later become known as the St. Louis-San Francisco Railroad - better known as just the Frisco. The new Frisco Company was forced to use the tracks of the Missouri Pacific for the 37-mile distance from Pacific, Missouri into St. Louis.  Frisco constructed its own line by 1883.

This is where actual history and the layout go their seperate ways. On the freelanced Meramec Valley and Pacific, the Frisco never obtained its own right-of-way from Pacific to St. Louis, and continues to lease rights to operate over Missouri Pacific Lines between Pacific and St. Louis.

Two staging yards serve to represent St. Louis and Kansas City The MoPac mainline passes through the Missouri towns of Sedalia, Pacific, and Valley Park. Newburg, Missouri on the Frisco line is represented by a small yard and engine servicing facility.