On the eve of the 20th Century, two sisters, each with a big heart and an indomitable will, set out to care for Kansas City’s neediest children. They began with one little girl. Then they helped a couple more children, and then a dozen … With no help from public subsidies or insurers, they treated all comers. That’s how Alice Berry Graham and Katharine Berry Richardson started an institution that has grown into a part of the soul of Kansas City: Children’s Mercy.