Shark attack, 1931-09-21 (Unprovoked)
Location: Municipal Beach, West Palm Beach, Palm Beach County, Florida, USA
Activity: Swimming 
Victim: Gertrude Holiday (F, age 20)
Injury: Right thigh & calf lacerated
Fatal: N
Species: Hammerhead shark, 2.4 m [8'], according to lifeguard Sam Barrows
Source: E.W. Gudger (1937); V.M. Coppleson (1958), p.252; R. Skocik, pp.174-175