Welcome. Here are a couple of threads about Minnesota A machines.
Vintage Minnesota Treadle
Need help identifying Sears Minnesota treadle sewing machine
The first link was started four years ago and has some good info in it. The posts by
jlhmnj have very good info. He is quite knowledgeable about these machine as indicated by his posts.
My post at
#27 of the last one will tell how to post pictures, as well as some additional info regarding Minnesota A's.
Janey - Neat people never make the exciting discoveries I do.