Annie Payson Call 
Brain Power for Business Men [PDF ebook] 

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. IN these days when the study and practice of economy in the manage ment of business is making such head way it seems quite time that we studied and practised the economy of that wonderful living machine which is at the back of all business life — the economy of the human brain.