I found this very interesting series of old streetlight ads from the late 50s - early 60s, you can view them
here Interestingly there's a ad for a OV-14B inside but it calls it a OV 14 instead, also you can see a ad from the late 50s for a OV 25. There's also a picture of a lume called a OV-60 which sorta looks like a a HMA-60 O_o. And check out the GE Custom M2000 too.
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