Lots of 1905 Aermotor information on this one. Information includes:

• a general History of windmills
• many pages devoted to the design of the Aeromotor windmill and why it is the best windmill
• selection of tower
• wind exposure
• proper loading
• installatino and care of an Aermotor
• many detailed images showing the pumping Aermotors
• Power Aermotors
• 4 post towers
• 3 Post towers
• Aermotor Trussed Tripod tower
• Suburban Outfits (water tank built into tower)
• Suggestions about selecting and installing pumps for windmill use
• Aermotor grinders
• Use of Wood Towers
• Automatic Regulators
• Frost Boxes
• Erecting an Aermotor Outfit
• size of Aermotor and size of pump cylinder for given depth of well
• pipe information
• pump troubles
• World's Fair Exhibit
• And more. 

75 pages.