Sherwin Cody 
How to Deal With Human Nature in Business [PDF ebook] 
A Practical Book on Doing Business by Correspondence, Advertising, and Salesmanship

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. How to write one hundred good letters a day Form-sentences – When to use a form-letter When not to use form-letters – System in freshening publicity – Complaint-letters – A poor answer to a letter of complaint – The same letter rewritten – Form-chart for complaints.