Not long ago, I emailed Jon Vanderford, co-host of the popular Pure Nebraska television program, to suggest a couple of stories. One was the 150th anniversary of the Rock School (Pleasant Valley Country School, Dist. 32). The other was about the ZCBJ Hall in rural DuBois. And here he came! The episode about the Rock School aired on August 31. Jon will let us know when the story about the Hall come…