Don't know much about the local geographical/manufacturing history bc I'm not around there, but being as you're an estate sale employee, in terms of value i don't think it's worth much. Maybe between 5 and 10 dollars. This is an abm (automatic bottling machine) made 1920s-1950s crown top bottle, most likely contained soda. Most people who collect collect older things, and those who do collect this type of bottle usually don't spend much on the pieces they buy. Sometimes an especially rare crown bottle from a rare bottling plant location or from a rare manufacturer are worth a little more, but most are worth little. 99.5% of bottles are worth less than a dollar, .499% are worth less than 5, and .001% are worth upwards of 10. If you do an auction style estate, it's good to start bottles at 99 cents. If they're worth more, multiple people will bid and raise the price to an appropriate level. If it's worth nothing, maybe someone buys it for a buck.
Root is for the Root Glass Co., they would a manufactured the bottle for the Coca Cola Bottling Co. of Bronson, Fla.
Nice bottle, here is a link to Root Glass