I posted an earlier thread about that, but there are two things :

1) the most obvious is the crank and hubs and steam bolt all say fuji. (don't have apick of the stem bolt but it's pretty fabulous... Everything is rusted to hell but I'm actually going to leave most things as is (the frame is not even getting clearcoat) I built a new wheelset (I'm keeping the old wheels around for ever just incase I need to somehow keep it together for historic value), I replaced the handle bars (again keeping them) and I'm going to leave the original cottered crank on there (I won't ride it that much, but it's the coolest part). The seat is also gone (again keeping).

here's my page dedicated to this bike... For proof of the fuji parts you can see the crank and the hub

http://briandrwecki.com/fuji.aspx



2) I googled around and found on wikipedia that they actually did sell to Montgomery Wards
In the history line it clearly states that they built bikes for sears and MW.

http://en.wikipedia.org/wiki/Fuji_Advanced_Sports

3) I didn't know that fuji even did this until I was cleaning it up and noticed that the crank was a Fuji crank and started to do some research...

There's no other explanation for why so much crap is fuji on a bike from the early 60s (my dad's child hood). EVEN THE SEAT POST BOLT (AMAZING).