Digest>Jan/Feb 2019
Photo Caption:
Harry E. Spencer is shown here front and center along with other lighthouse keepers and lighthouse officials from the 4th lighthouse district in a group photo believed to have been taken at the 1926 Sesquicentennial Exposition in Philadelphia, Pennsylvania. (Harry Spencer, Jr. Collection, Lighthouse Digest archives.) Back to the edition of: Jan/Feb 2019
Story:
The Mysterious Disappearance of America’s First Fresnel Lens
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