Found this pic from about 1974. The Poplar was fat and about 130' tall, the tallest tree in the woods behind my house. It had a sister about 12/14" that was close/parallel the big tree. I found that I could grab the sister w my hands and walk up the trunk about 25/30' to reach the limbs on the big tree. Then I could climb as high as could and I cut out my name and the date in the bark. I was born tree climber but girls and hunting/fishing and chasing girls took me away from climbing trees........
