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William Joseph Hammer (February 26, 1858 – March 24, 1934) was an American pioneer electrical engineer, aviator, and president of the Edison Pioneers. (From Wikipedia) More about William Joseph Hammer:
| | Books by William Joseph Hammer: Additional books by William Joseph Hammer in the extended shelves:![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif) Hammer, William Joseph, 1858-1934: Chronology of aviation (H. Francis, printer, 1910), also by Hudson Maxim (page images at HathiTrust)- Hammer, William Joseph, 1858-1934: Important European electrical and engineering developments at the close of the nineteenth century (McIlroy & Emmet, 1901) (page images at HathiTrust)
- Hammer, William Joseph, 1858-1934: Radium, and other radio-active substances; polonium, actinium, and thorium. With a consideration of phosphorescent and fluorescent substances, the properties and applications of selenium, and the treatment of disease by the ultra-violet light (D. Van Nostrand company;, 1903) (page images at HathiTrust)
- Hammer, William Joseph, 1858-1934: Radium, and other radio-active substances; polonium, actinium, and thorium. With a consideration of phosphorescent and fluorescent substances, the properties and applications of selenium, and the treatment of disease by the ultra-violet light (D. Van Nostrand company;, 1903) (page images at HathiTrust)
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