Thursday, January 07, 2010

Snowsheds and bridges

From: "McGuire, Margit" MMCGUIRE@seattleu.edu

How many snowsheds were built through the Sierra Nevada Mountains at the time the railroad was built?

How many bridges/trestles were built through the Sierra Nevada Mountains at the time the railroad was built?

Margit E. McGuire, PhD
College of Education
Seattle University