please read my article on The Gasoline Gossip, November 1924, newsletter of Hercules Gasoline atations of Los Angeles, and its links:
https://docs.google.com/Doc?docid=0AfYpRRSbRDlzZGN6d3F6NDlfMTg1OWY0YnFkMmd0&hl=en_US

That's cool and i love the Hercules Sign! It's kick A@@!

Thanks!

Isn't that Sparkplug, from Barney Google (or whatever the cartoon was called in the 20s)?