All_Business_Letters - Version 2011 All-Business-Letters is the most comprehensive library of business letter samples available today. Bringing together professionals and expert in each field , and the efficiency of an executive secretary.Including over 4500 high-quality and professionally written essential business, sales and marketing letters and writing guidelines in more than 1,000 categories which virtually covers all situations in any business.Write like a professional - Many professional writers contributed their valuable experiences and letters so you'll never be at a loss for words again.