His WWI draft registration says he was born September 11, 1885.
Found him on the 1900 Manhattan, New York, New York census (dist 710 img 1) as
Rudolph Finger age 13.
Found him on the 1910 Manhattan Ward 19, New York, New York census (dist 1025 img 32) as
Rudolph Finger age 24. Produce peddler.
Found him on the 1920 Manhattan Assembly District 14, New York, New York census (dist 1021 img 5) as
Rudolph Finger age 36. Machinist, jewelry.
Three persons were injured critically and four others severely bruised as the result of a crash between a large cinder truck and a Long Island Railroad train today.
Rudolph Finger, 30, driver of the truck, is reported dying at South Nassau Hospital. The truck was traveling north on Wright avenue when the eastbound train roared across the intersection. It hurled the truck against a telegraph pole. Fire set in. William A. Cook, 34, of 83-32 210th street, Bellaire, motorman of the train, suffered a fracture of the hip and a possible knee fracture.
Finger lives in Manhattan. The truck was owned by the Empire Cinder Delivery Company, also Manhattan. Finger's companion, Harry Schweitzer, 23, of 33 Windsor place, Rockville Centre, was tossed to the ground. He suffered internal injuries. Local fire apparatus, called by witnesses of the crash, extinguished the flames, caused by an explosion, but the truck was practically demolished. - Long Island Daily Press June 24, 1932