Harvestore silo challenge


Okay, here's a pesky question that shows up whenever driving through farm country. So you know the bright blue Harvestore (oxygen-limiting) silos that are relatively common. Some of them have large US flag decals up near the tops of them. In the Jane Smiley novel A Thousand Acres, it's mentioned that the Harvestore dealer puts that flag up on the silo when it's paid off. I've heard that version elsewhere as well, but there does not seem to be any justification for that story on the web.

Normally I have the Google-Fu but on this one, no luck in my searches. So here's the challenge, can you find if that story is true using only the Internet. (Sure, you could call Jane Smiley or the local Harvestore dealer, but let's stay online for this one.)

It's also interesting to note that lots of farmers are selling off their silos and the Harvestores are mostly headed to Scandanavia.