 Goodall, Nelson and Perkins steamships "Ventura" and "Constantine" began weekly service to Port Harford in 1873; and Ah Louis built a horse-powered, narrow gauge tramway in 1873 to transport passengers and freight between Port Harford and a wagon road at Avila Beach.In 1876, Pacific Coast Steamship Company replaced the tram with the narrow gauge steam-powered San Luis Obispo & Santa Maria Valley Railroad to San Luis Obispo.Operations began with ten boxcars and one coach pulled by a and a built by Baldwin Locomotive Works.