How many bowling pins were used in 1895?

Answer 1

In the United States, ten pins were already fairly standard by 1895, when the American Bowling Congress was founded.

Fifty years earlier, ninepins (with nine bowling pins arranged in a diamond shape) was the game of choice. But in the 1840s, several states approved a ban on ninepin bowling, in part because of the gambling associated with the sport.

So proprietors added a tenth pin, rearranged the rack into its current triangle shape, and the sport of tenpin bowling was born.