Monica,
If this is important to you, then, perhaps, you ought to send an email to the editor.  That is more likely to result in a correction that simply posting here.  Also, as someone who makes typos often, I don't notice when I make them, and when I re-read what I have written, there are times when I read what I meant to write, instead of what is on the page.  It often takes another pair of eyes to notice one's typos.  I don't think that NCR has the staff to edit the pieces that get posted online.  I agree with you that it's a shame, but .....