Since each letter is different, I have published the letter I sent to the department that I took the job in UW Department of Communication. Because my new department did not request research and teaching statements, the cover letter I wrote includes material taken from these documents. For departments that requested these other materials, I limited myself to a two-page cover letter. In both cases, the structure of the letter was similar. More details and links to my other job market materials is online here: http://mako.cc/copyrighteous/job-market-material