If you’re like me, you been across the US and noticed the various State Highway Marker Shields. The above map displays all of them, positioned over each state. Some have historical/social meaning (California – the shape of a shovel (as in digging for gold), Utah – a beehive (a signal of Mormonism), or Pennsylvania – a keystone, as in the Keystone state that connects the east coast to the mid-west), some are merely the outline of the state shape (Idaho, Arizona, Missouri, etc.), and some have no significance at all (Texas, Montana, Illinois, etc.). What’s your sign?