Joel Cook,
America, Volume 2 (of 6)
“ Here has been established the most completely representative railway city in the world, having enormous railway shops, a gigantic establishment, and a population of thirty-five thousand, almost all in one way or another dependent on the Pennsylvania Railroad. Altoona is at an elevation of about eleven hundred feet above tide, and the railway climbs to the summit of the mountain by a grade of ninety feet to the mile, winding around an indented valley to get the necessary elevation. At its head this valley divides into two smaller glens, with a towering crag rising between them. ”
