Need help to identify my Minnesota Treadle
 

Can anyone help me identify my Minnesota treadle? It does not have a model letter. Would love to know the age and type to get a manual for it. If you have any ideas of where I should search would also be appreciated.

I would start here:

http://ismacs.net/sears/sears.html

And then search this board, I'm guessing someone has posted about a manual, or more information, for this machine or one very similar.

thank you so much. I will read through this link and see if I can gain some insight. From all the things I have looked at and the placement of the treade; it is hard to determine the if this treadle is a model "A" by Davis or a minnesota B. Hopefully this sight will help me determine that.