P. R. R. shops’ Altoona, Pa. interior of locomotive black-smith shop.

P. R. R. shops’ Altoona, Pa. interior of locomotive black-smith shop.

P. R. R. shops’ Altoona, Pa. interior of western round-house.

P. R. R. shops’ Altoona, Pa. From middle round-house north east.

P. R. R. shops, Altoona, Pa. Wheel-foundry.

P. R. R. shops, Altoona, Pa. Wheel-foundry.

P. R. R. shops, Altoona, Pa. Boiler-shop.

P. R. R. shops, Altoona, Pa. Boiler-shop.

P. R. R. shop’s Altoona, Pa. Looking through the lathe shop.

P. R. R. car shops, Altoona, Pa.

P. R. R. car shops, Altoona, Pa.

P. R. R. car shops, Altoona, Pa.

P. R. R. car shops, Altoona, Pa.

Interior of store-room, at P. R. R. shops, Altoona, Pa.

P. R. R. shop’s Altoona, Pa. iron foundry.

P. R. R. shop’s Altoona, Pa. iron foundry.

P. R. R. shop’s Altoona, Pa. erecting shop, from the front entrance.

P. R. R. shop’s Altoona, Pa. erecting shop, from the front entrance.

From Point Look-out on the Bell’s Gap R. R.

From Point Look-out on the Bell’s Gap R. R.

Looking through the wilderness, on the Bell’s Gap R. R.

Looking through the wilderness, on the Bell’s Gap R. R.

Flat Top Mountain, on the Bell’s Gap R. R.

Flat Top Mountain, on the Bell’s Gap R. R.

Looking over the wilderness, from Point Look-out, on the Bell’s Gap R. R.

Looking over the wilderness, from Point Look-out, on the Bell’s Gap R. R.

From Point Look-out south, on the Bell’s Gap R. R.

From Point Look-out south, on the Bell’s Gap R. R.

Across the ravine, below Point Look-out, on the Bell’s Gap R. R.

Across the ravine, below Point Look-out, on the Bell’s Gap R. R.