I have seen this 'Nit' on cards before. I seem to recall that it stands for something, but I can't remember what. Does anyone else know? Any guesses?
Also, I have only seen Washington state abbreviated as WA, never as WN.
Here's the back of the card.
The message to Master H.G. Modrell of Tekoa, Washington reads:
Why don't you ever write to me? Gee but I would like to have you here now. How are you feeling now? How is your Mama? Well so long and ans soon.Love to u'all. How's my kitty are you taking good care of her for me?
Tekoa is a small town in eastern Washington near the Idaho border. It currently has a population of around 800 people, but back in 1912 when this card was sent, the population was closer to 1,500. Cheney, Washington, which is located in Spokane County (also eastern Washington) had a similarly-sized population in 1912, but their population has continued to grow and is now over 10,000.