Jack Chisholm's parents were J.J."Jimmy" Chisholm and Lulan Royle Chisholm. The Chisholm's had been neighbors of Pete Anderson for many years back in the days when there were few people living up in those hills and they all knew each other.
At the time of this writing, Pete Anderson has moved to Seattle (I don't know whether he has a house, is with relatives, or is in an old folks home), Jimmy & Lulan Chisholm have moved to Renton, and Bob & Gen MacManiman had bought the log cabin that Jimmy Chisholm had built up in the hills above Fall City.
Jimmy & Lulan were living with Alice Chisholm Saunders (their daughter) & David Saunders and the two grandchildren at the time they were building a little house on the corner of the property in Renton. The reason they were able to get any materials at all in a time where EVERYTHING was going to the war effort is because Jimmy Chisholm had tuberculosis and it was thought a bad idea for him to be living in close quarters with two young children who might catch it. Therefore, he was able to get materials, eventually, and build a little house for himself and Lulan in Renton.
"Town" is what Jack always called Seattle. "Go to town" meant going into Seattle, which was about 30 miles away.
Address on Jack's letter is Snoqualmie Falls, but is for the place that we live now, which has a Fall City address. This place has also had a Snoqualmie address. It depends on where the officials think the town lines should be drawn this time.