Saloons of the Old West

This is a delightful book I'm reading. It's a history of the western saloon, told by a quirky and entertaining writer. Here's a poem from the book:

The horse and mule live thirty years
And never knows of wines and beers.

The goat and sheep at twenty die
Without a taste of scotch or rye.

The cow drinks water by the ton
And at eighteen is mostly done.

The dog at fifteen cashes in
Without the aid of rum or gin.

The modest, sober, bone-dry hen
Lays eggs for noggs and dies at ten.

But sinful, ginful, rum-soaked men
Survive three-score years and ten.
And some of us...though mighty few
Stay pickled 'til we're ninety-two.