A question posed in 1999 asked, “I’ve often read that there were 500,000 morphine addicts running around after the Civil War. Is this true? If so, did narcotics have a deleterious effect on the Old West? How many cowboys were wacko on these then-legal drugs?” According to one interesting source, the answer was… maybe: Still, even allowing for exaggeration by drug alarmists, you have to think the Civil War had…