Digest>May/Jun 2017

Photo By:

 

Debra Baldwin

Photo Caption:

The 4th order lens from North Head Lighthouse in Washington State. North Head Lighthouse was built in 1898 to help guide ships entering the Columbia River. This 4th order Fresnel-style lens weighing about 600-pounds was used in the lighthouse from 1937 to 1950.
Back to the edition of: May/Jun 2017

Story:

Crossing the Columbia Bar at Oregon’s Columbia River Maritime Museum
Back to the edition of: May/Jun 2017

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