Dear Connie Lynn,
What have you been doing? I miss you all day long. Daddy will be gone a long long time but I will think of you every day. You be a good girl and love your momma and brother. And give them a kiss every night for Daddy. You be good in church and Sunday school and remember Daddy in your prayers.
I love you, Punkin.
Guessing this to be 1966 or 1967 or thereabouts