| Nomination for Nobel Prize in Physiology or Medicine | 
| Year: | 1942 | 
| Number: | 30 - 0 | 
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| Nominee 1: 
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| Name: | B  von Borries | 
| Gender: | M | 
| Year, Birth: | 1905 | 
| Year, Death: | 1956 | 
| Profession: | employee, Siemens El. AG | 
| City: | Berlin | 
| Country: | GERMANY (DE) | 
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| Nominee 2: 
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| Name: | Ernst August Friedrich  Ruska | 
| Gender: | M | 
| Year, Birth: | 1906 | 
| Year, Death: | 1988 | 
| Profession: | employee, Siemens El. AG | 
| University: | Fritz-Haber-Institut der Max-Planck Gesellschaft | 
| City: | Berlin | 
| Country: | GERMANY (DE) | 
| Awarded the Nobel Prize in Physics 1986 | 
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| Motivation: | Development of the electron microscope. | 
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| Nominator: 
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| Name: | Luigi  Villa | 
| Gender: | M | 
| Profession: | prof pathology | 
| City: | Milan | 
| Country: | ITALY (IT) | 
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| Comments: | Ruska´s initial was given as "H" in the letter, though the candidate was presumably Ernst Ruska. | 
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