Invention and Engineering

Griswold Signal Company

The Griswold Signal Company was an American company focused on railway signalling, based in Minneapolis, Minnesota. Founded by Minnesota native Franklin Wolcott Griswold, the company manufactured traffic signals and railroad level crossing signals.

Also on this shelf

See also

• ▸Fredrik Ljungström
• ▸Byzantine science
• ▸LNER Peppercorn Class A2 60532 Blue Peter

Uncatalogued shelf

Text from Wikipedia; plate via Wikimedia Commons. Text CC BY-SA 4.0; plate freely licensed (see Commons). Source record. Images and catalogue data are reproduced from open-access collections.