| Here is page 64 of a 64-page booklet published by Harry P. Albrecht entitled "World Famous Horseshoe Curve, Altoona, Pennsylvania Railroad." It was first issued in September of 1973. Here is a passage from the text: "It could be called the 'greatest show on earth' ~ that parade of trains over the World Famous Horseshoe Curve, moving continuously since February 15, 1854!" (Note: Both of the structures pictured here have since been demolished.) |