
September 19, 1887 – What do the numbers on the gas pump mean?
On this day in 1887 Dr. Graham Edgar, developer of the octane rating system, was born in Fayetteville, Arkansas. During

On this day in 1887 Dr. Graham Edgar, developer of the octane rating system, was born in Fayetteville, Arkansas. During


This book tells fascinating tales, bringing individual days to life with short stories, photographs and illustrations.
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