Image: Campbell William Wallace
Campbell_William_Wallace.jpg (345 × 482 pixels, file size: 31 KB, MIME type: image/jpeg)
Description: Photograph of William Wallace Campbell, the astronomer
Title: Campbell William Wallace
Credit: Opposite page 240 of Astronomers of Today
Author: Hector Macpherson
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
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