Jonestown massacre: Jonestown massacre, the mass murder-suicide of members of the Peoples Temple cult in Guyana in 1978 at the behest of leader Jim Jones.
Your cover letter shouldn't be longer than one page. It should highlight your most relevant qualifications for the job and what you have to offer the employer. In fact, as far as how long your cover letter should be, shorter is better.
As important as what's in a cover letter is what's not in it -- namely typos, grammatical errors, inappropriate or overly familiar use of language and verbose, irrelevant facts that waste the hiring manager's time. Proofread the letter yourself, then have a friend proof it.