1912 Hoffman House Bartender's Guide by Charley Mahoney

arrogant or overbearing even to the poorest or hum blest man who lays a nickel on your bar, so long as he behaves himself. As you would not permit a cus tomer to offend you be careful you do not offend him. If he drinks too much bear in mind that you have sold him those drinks and that you are to a certain extent responsible for his condition, and treat him accordingly. Above all things, be fair to every one and remem ber that if you do not learn to treat your customers as they think they ought to be treated, there are many other places where they can find just as good liquor and better treatment. If you had a monopoly of the business, you could, if you were that kind of a man, do exactly as you liked, but as it is, consider that it is not very far to the next saloon, and one disgruntled or offended customer, no matter what kind of a man he is, has some friends whom he can influence.

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