Flat Rock tunnel, Reading R.R., length 940 feet.
Summary
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Tags
pennsylvania
philadelphia pa
flat rock tunnel
stereoscopic views
flat
rock
tunnel
length
united states
robert dennis collection of stereoscopic views
history of pennsylvania
ultra high resolution
high resolution
new york public library
Date
1850 - 1930
Source
New York Public Library
Link
Copyright info
Creative Commons CC0 1.0 Universal Public Domain Dedication ("CCO 1.0 Dedication")