At Lonoke High School, he won the state long jump for three years straight, 1923 to 1925, setting a state record of 23'2" his sophomore year.
At the 1927 Penn Relays, Northrup won the javelin throw and finished second in the long jump to 1928 Olympic gold medalist Ed Hamm of Georgia Tech.
Hamm | Mia Hamm | Jon Hamm | Paul Hamm | Hamm am Rhein | Ed Hamm | Kathryn Hamm | Hamm's Brewery | Hamm, Bitburg-Prüm | Fred Hamm | Donald "Isa" Hamm Bryant |
Ed Hamm (1906–1982) - American track and field athlete, who won the gold medal in long jump at the 1928 Summer Olympics.