| Original Trefoil Warning Sign from Berkeley (ca. 1948) |
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| This warning sign was produced for use at the
Radiation Laboratory in Berkeley. The folks at Berkeley wanted to use a
blue background but recognized that the magenta trefoil stood out more
clearly on yellow. I suspect that this was either a later version of
the sign used at Berkeley or possibly part of a test run. At least
some of the Berkeley signs were produced by the Eastman Tag and Label
Company at 162 Grand Avenue in Oakland California.
Donated by George Warlick |
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Last updated: 07/25/07 |