Never seen one with the American West Windmill Company Amarillo Tx Markings. Company went through several ownership changes since 1892
We have 5 towers still up but not working for many years. They are all marked AEROMOTOR. My dad told me they were sold through Amarillo Hardware and made in Chicago at that time. The owner of company helped during WW2 with development of the Norden Bombsite
We went with Greenbelt water out of Clarendon Tx. In the 70s. Got to be a lot of dry holes and hot work pulling windmills in the summer.https://en.wikipedia.org/wiki/Aermotor_Windmill_Company
Thanks for the interesting picture.
Take a look at Texas Tech Heritage Museum windmillshttp://www.depts.ttu.edu/nrhc/