Being new to HISTARCH I am impressed with the amount of and diversity 
of knowledge among the membership. Please allow me to jump into the 
waters of knowledge to locate possible information.

I have been working on a historic Grist Mill (corn grinding) site for 
about seven years now. I have never found an accurate drawing of an 
overshot waterwheel showing all the working components. At one point 
in time the mill was converted into a horizontal water wheel. I have 
several blades from the horizontal wheel which seems to indicate it 
was an enclosed wheel. No proof!! Date of the mill is 1835-38.

I hope someone in the membership can guide me to a reference book, 
paper or something to help me understand the workings of this type of 
mill.All guidance will be appreciated.