I read in " A Missouri Railroad Pioneer: The Life of Louis Houck" by Joel P. Rhodes, about a 800 foot tunnel. The tunnel was near Williamsville MO, "800 foot tunnel being blasted to assure a satisfactory grade from Otter Creek across the Black River vally." The book has the tunnel finished in1888 or 1889. This was on the CapeGirardeau & Southwestern, that eventually was sold to the Frisco around 1900 or 1901. The book says the tunnel had a "12 year run that ended with the tunnel's eventual collapse and condemnation. Anybody know about this?