in Upper Perkiomen Valley, Green Lane, PA 18054, USA
Flag photo:
Photo details:
- Viewed 238 times
- Uploaded on August 12, 2007
-
©
All Rights Reserved
by Richard Muir -
Extra information
- Camera: Canon PowerShot S110
- Taken on 2007/07/04 14:02:34
- Exposure: 0.003s (1/400)
- Focal Length: 10.81mm
- F/Stop: f/4.000
- Exposure Bias: 0.00 EV
Comments
R. B. Castor, on November 10, 2007, said:
These markers were instituted by Benjamin Franklin, joint postmaster general during Colonial times, for the purpose of setting fair postal rates. I'm glad someone has taken an interest in documenting these disappearing markers. I know of a few in the area and will do the same soon. U.S. Geological Survey markers are another curious subject that may be found along the roadsides— usually at high elevations.
Richard Muir, on November 25, 2007, said:
Hi, Thanks for the information. I stumbled across a USGS Benchmark near new Holland, PA earlier this year and just uploaded a photo.