In case you're just joining (ah, who am I kidding. Hello? Anyone out there?), I've been showcasing Valentine's sent to Peter Blank, a teacher from Freeburg, Illinois in the 1930's and '40's.
I'm not sure of the intended reference of "call me down". Maybe it means call me down for a date? Google offers "calling someone down" as meaning to reprimand or "bawl out": "The teacher had to call down Sally in front of the whole class." I'm not sure that's what the kid that sent this Valentine intended.
To Mr. Blank from Jessie Light