Paul Deis wrote:

Some additional information on Placards. I have been doing research for an article on placards. My former career was teaching Hazmat so I had an interest.
The earliest placards I could find were from 1903. The earliest regulations I could find were produced in 1908 by the ARA.
I posted photos of some of the placards and pages from the 1908 regs in a folder called Paul's Placards. I have data and placards from 1903 until present day but they are in storage. Some day I will dig them out and get the article written

Very interesting stuff, Paul! I will look forward to seeing those placards and regulations. Maybe you know, regarding the pre-1960 placards: were they always printed the same way, such as all-black lettering or all-red, or, as I suspect, were they not always consistent? I mentioned my uncertainty about this in my blog post. Obviously this affects what kind of placards we want to put on our models.

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