Errand

I purchased this National brand sewing machine and it has "The Jackson" printed on it. I think it is an Improved Seamstress model. I haven't found a cabinet online that matches completely though as mine has curved drawers. I would love input on what people think this model is or how old it is. Also, perhaps most importantly, does anyone have any suggestions for a user manual? I want to sew with it, but this is my first antique sewing machine. It seems to have all of its attachments/shuttles/bobbins.