The most common rail currently used is 141 AREMA with a height of 7-7/16". There are over 20 rails still used in the US (9 still in production) Outside of the Class 1 railroads 115 AREMA is very...
The underground railroad wasn't really a railroad, it was a way for slaves to get away from their owners. Whites would try to help them escape to a place where there were no slaves. It was located...