Sample FOIA (Freedom of Information Act) request.
Here are some resources for those pursuing public data through FOIA requests:
http://www.foiadvocates.com/samples/1.html
http://www.nfoic.org/sample-foia-request-letters
http://www.fas.usda.gov/info/FOIA/sample.html
http://www.foia.cia.gov/sample_request_letter.asp
http://www.fincen.gov/foia/files/samplefoiaandparequest.pdf
http://publications.usa.gov/epublications/foia/letters.htm
http://www.blm.gov/ntc/st/en/ntc_public_room/sample_foia_request.html
http://www.fbi.gov/foia/sample-fbi-foia-request-letter/
http://www.gwu.edu/~nsarchiv/nsa/foia/howtofoia.html