Does anyone remember any of these unfortunate events? Comments?
In the half-century that Disneyland has been in operation, nine guests and one cast member have died at the park. A greater number of guests have been injured.
Seven of the deaths were the result of negligence on the guests' part rather than the park's:
In 1964, 15-year-old Mark Maples of Long Beach, California died after he stood up in the Matterhorn Bobsleds and fell out.
In 1966, Thomas Guy Cleveland, 19, of Northridge, California was crushed by the Monorail during a Grad Nite celebration while trying to sneak into the park by climbing its track.
In 1967, Ricky Lee Yama, 17, of Hawthorne, California was crushed while jumping between two moving PeopleMover cars.
In 1973, Bogden Delaurot, 18, of Brooklyn, New York drowned while trying to carry his little brother swimming across the Rivers of America.
In 1980, Gerrardo Gonzales, 18, of San Diego, California was crushed by the PeopleMover while jumping between moving cars.
In 1983, Philip Straughan, 18, of Albuquerque, New Mexico drowned in the Rivers of America while trying to pilot a rubber emergency boat from Tom Sawyer's Island.
In 1984, Dolly Regene Young, 48, of Fremont, California unbuckled her seatbelt and was thrown from a Matterhorn Bobsleds car and struck by an oncoming train.
In 1974, cast member Deborah Gail Stone, 19, of nearby Santa Ana, California was crushed to death by a revolving wall in the now-closed "America Sings" attraction. She was in the wrong place during a ride intermission; it was unclear whether this was due to inadequate training or a misstep. The attraction was subsequently refitted with breakaway walls. 
On December 26, 1998, a metal cleat aboard the sailing ship "Columbia" tore loose, striking three people in the head. Of them, Luan Phi Dawson, 33, of Duvall, Washington, died of a head injury. The normal non-elastic rope (designed to break easily) to tie the boat off was improperly replaced by an elastic rope which stretched and pulled off the cleat. The park received much criticism for this incident due to its policy of restricting outside medical personnel in the park to avoid frightening visitors, as well as for the fact that the cast member in charge of the ship at the time was a novice.
On September 5, 2003, 22-year-old Marcelo Torres of nearby Gardena, California died after suffering injuries in a derailment of the Big Thunder Mountain roller coaster. The cause of the accident was determined to be improper maintenance.