Pennsylvania Geological Survey - Historical Photographs

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  • Date = 1923-08-21

About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
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Top of Catskill (lower half) base of Cuyahoga shale (upper, 700 feet thick)
Top of Catskill (lower half) base of Cuyahoga shale (upper, 700 feet thick)
Stratigraphy
Top of Catskill (lower half) base of Cuyahoga shale (upper, 700 feet thick). Where railroad turns north from Sugar Run., 18-23
Typical Chemung strata
Typical Chemung strata
Stratigraphy
Typical Chemung strata, two and one-half miles below Horseshoe Curve
Ventilating apparatus
Ventilating apparatus
Nonmetallic Mineral Resources
Ventilating apparatus, east portal of Gallitzin Tunnel., 18-8
View down Sugar Run
View down Sugar Run
Stratigraphy
View down Sugar Run (Allegheny Mountain, 2,480 feet, in background). From southern tip of curve one half mile southwest of Allegrippus., 18-14
View east of north along Allegheny Front
View east of north along Allegheny Front
Topography
View east of north along Allegheny Front, across Horseshoe Curve., 18-27
View east toward Allegrippus (Allegheny Mountain in distance)
View east toward Allegrippus (Allegheny Mountain in distance)
Topography
View east toward Allegrippus (Allegheny Mountain in distance). From hill over east portal of Gallitzin Tunnel., 18-6
View northeast toward Altoona
View northeast toward Altoona
Topography
View northeast toward Altoona, one mile southeast of Horseshoe Curve., 18-26
View south of east from Horseshoe Curve
View south of east from Horseshoe Curve
Topography
View south of east from Horseshoe Curve., 18-31
View southwest from one and three quarter miles below Horseshoe Curve
View southwest from one and three quarter miles below Horseshoe Curve
Topography
View southwest from one and three quarter miles below Horseshoe Curve (Altoona Reservoir in foreground), Allegheny Front., 18-33
View toward Burket
View toward Burket
Topography
View toward Burket, from nearest point in railroad., 18-38
View up Burgoon Run from railroad
View up Burgoon Run from railroad
Topography
View up Burgoon Run from railroad., 18-30
View up Sugar Run
View up Sugar Run
Topography
View up Sugar Run, mountain in background 2,540 feet high (south of Bennington). From one half mile east of west of Hollidaysburg quadrangle., 18-21
View west toward Gallitzin
View west toward Gallitzin
Topography
View west toward Gallitzin, from bend west of Allegrippus., 18-11