Of course, even today, but especially a century or two ago, a typical crime story started off with “the old man/woman was a miser and rumor has it there was a huge sum of money hidden in the house.” Or, like Merchant of Venice, the ungrateful child took off with your life’s savings. (There once was a man from Nantucket, who kept all his cash in a bucket, His daughter Nan, ran away with a man, and as for the bucket- Nan tucket.)So risky as a bank was, keeping too much in the house was even riskier.
There was the ending scene in the sequel to “The Immigrants”, where the prodigal sons find their way home, only to discover the money that had cost so much suffering and death was worthless banknotes from a bank that had gone under. I suppose that’s another risk - currency as meaningful as how close you are to the bank that will redeem the notes for cash or gold.
I suspect the point with interest was - you want your money to make something, buy a bond and commit to tie it up for a fixed period. Remember that bonds (or flashy paper with seals) played a prominent part in many westerns too?
I’m sure the bank was liable for any major losses, and hence the need to protect the cash; butit was still a bank doing business. If they got robbed one day at noon, there’s still saloon bringing their deposit in at 5PM, the rancher depositing a cheque from the Chicago meat packers, the railroad station bring in ticket receipts, and the mortgage payments at the end of the month - so the proportion of deposits NOT sitting as cash in the vault would still be earning and money would still come in.
Anyone have a clue what typical loan and mortgage interest rates were in those days? The spread between deposit interest paid (zero) and interest charged on loans gives you a good idea as to the risk that the bankers assumed they were taking on.
Also remember - most of these small towns were just that - small towns. We assume from life in the big city that nobody has a clue about the stranger next door. No, small towns are all gossip. SOme stranger rides into town, or is seen camping in the gully a few miles away, or tracks of strangers wandering around near town - some busybody will tell everyone else, including the sherriff. People will watch out. It was not until the advent of the motorcar in the 1920’s and 30’s that you could drive into town and hit the bank before they knew what was coming, and be 200 miles away before they figured out what had happened.