People generally toss them, but here's one I have on file.
Name
Address
Phone
Email
Employers Information
Job Position
As an employee, my efforts and dedication will be at its highest capacity since this is not only an occupation, but also a passion and lifetime goal. I am completely willing to relocate to anywhere within the United States and can make any other adjustments necessary in order to adhere to your requirements. The background of my <skill> knowledge covers many fields, due to the length of training and experience in the industry. My area of expertise resides in <skill>. Consistent training in <another word for your skill/trade> is necessary as time progresses and I remain to be on par with all of its advancements.
Enclosed is my resume. If you have further questions, please feel free to contact me any time. I look forward to receiving a response and setting a date for us to meet.
Sincerely,
<Name>