http://www.4hb.com/letters/

http://sbinformation.about.com/od/bizlettersamples/Business_Letter_Samples_Business_Letter_Writing.htm

http://www.letter-samples.com/businessletter.html

http://www.letter-samples.com/business.html

http://www.4hb.com/letters/index4.html

http://owl.english.purdue.edu/owl/resource/653/02/

http://jobsearchtech.about.com/od/letters/l/bl_block_p.htm

http://www.writeexpress.com/sample-business-letters.html

http://www.businesslettersample.net/

http://www.libraryonline.com/business_letters.html