About the Images

All of the images here are in the public domain in the USA, with sources as indicated.

Often the originals are too large to present online. Click (or right-click to download) on each image for a larger (if not as large as possible) version.

The images which serve as links to other documents on this site are described on the "About the Images" pages for those linked documents.

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image link-topic-sf0.jpg

From: From a 6-page tri-fold brochure, "Spencer Microscope 44-H" published by the Spencer Lens Company. Undated, but circa 1920. Scanned by the author from the original; public domain.


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