“In afternoon went damming over woods. Started to record tape to send to Sue”
What?
Damming?

Mmm... nice beaver
Unless I had been assimilated by a beaver, I will suspect this means that ‘we kids’ merely took on their characteristics and stopped a small stream from flowing somewhere in the woods. Probably with rocks, stones, sticks and ‘stuff’. Hopefully, NOT Action Men?!
Not sure I need, or want, to know what the tape to Sue may have contained.