JUNE 25TH, 1889 DAKOTA TERRITORY MINING DEED FROM THOMAS BLAIR TO W.W. CHALLIS FOR THE  "PROCTOR KNOTT QUARTZ" LODE JOINED ON THE NORTH FORK OF BATTLE CREEK ABOUT 1/2 MILE W. FROM THE BOB INGERSOL LODE (ON THE KEYSTONE TO HILL CITY ROAD)  AND IS SIGNED AS WITNESS BY D. N. SWANZEY AND HIS PARTNER W.E. GERARD AND NOTARIZED BY DAVID N. SWANZEY.

DAVID SWANZEY LIVED IN KEYSTONE AND SHOWED CHARLES RUSHMORE TO THE MOUNTAIN HE PURCHASED.  SWANZEY MARRIED CARRIE INGALLS, SISTER TO LAURA INGALLS WILDER IN 1912.  BOTH DAVID SWANZEY AND CARRIE INGALLS SWANZEY ARE BURIED IN THE KEYSTONE CEMETERY ALONG WITH MARY INGALLS WHO WAS THE BLIND SISTER.