On October 4, 1969, 20-year-old Diane died after jumping out of her sixth-floor kitchen window. Linkletter claimed that her death was drug related because she was on, or having a flashback from, an LSD trip (toxicology tests later determined there were no drugs in Diane's system at the time of her death). After Diane's death, Linkletter spoke out against drugs to prevent children from straying into a drug habit. On October 24, 1969, he said "Anybody who has said anything which would encourage my daughter to take LSD was unwittingly a part of being her murderer." His record, "We Love You, Call Collect", recorded before her death, featured a discussion about permissiveness in modern society, along with a rebuttal by Diane, titled "Dear Mom and Dad". The record won a 1970 Grammy Award for the "Best Spoken Word Recording".