File:Magnetic wigwag upper quadrant.jpg
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Summary
| Description |
English: Type of wigwag signal by Magnetic Signal Co. |
| Date | |
| Source | Magnetic Signal catalog |
| Author | Unknown author |
Licensing
|
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:01, 24 October 2020 | | 229 × 713 (28 KB) | Fma12 | Uploaded a work by Unknown from [https://davemargulius.com/wp-content/uploads/2006/02/1922-magnetic-signal-co-catalog.pdf Magnetic Signal catalog] with UploadWizard |
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