This guide to letter writing shows you how to write more powerful and effective letters. Over 20 letter explanations and sample letters are included. There are guides for the following types of letters: Business Apology Letter Business Complaint Letter Business Letter Business Proposal Letter Cover letter Fundraising Letter from a Non-Profit Organization Interview Thank You Letter Letter to Customers Resignation letter Recommendation letter Personal Letters Classroom issues Insurance Matters Letter to the Editor Neighborly problem letter Personal Apology Letter Personal Complaints Letter Personal Legal Matters Personal Letter of Congratulations Personal Thank You Letter Sympathy Letter