Mary would have been nine-years-old at the time this letter was written, Rob would have been seventeen. Perhaps Mary intended to write a paragraph to Dad to complete the trio of adressees, possibly to discuss legal options concerning behavior of relatives.
Sunday, July 8, 1973
Dear Mom, Dad and John,
"Hi! Robbie John – Hi I would rather have you to beat up on me than Robbie everytime everytime I get up he pushes me back down. And now he is beating up on Aunt Mary. I am glad to get him off my back.
Mom – Bert and I went shopping friday. We looked at some sandels. 1 was 2.97 and the other with thongs I liked better were brown and cost $9.00.
[unsigned] [note in Roberta's handwriting]
found this in ax notebook –– thought you all might enjoy reading it! [enclosed with letter dated 5/15/74]