Hi,
Nice find. You have a 1908 "Old Style" Minnesota A made by Davis SMco. out of Dayton Ohio and sold by Sears Mail order catalog. Link for similar "New Style" A owners manual. Main difference between the two is the Old A has a flat needlebar and the New A is round and the styling is a bit different. Sounds like you have everything needed to start sewing once she / he is cleaned up and oiled. Enjoy.
Jon
http://www.clawges.com/sewing/MN_A_manual/index.html
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