Hi Dollylee,
When I woke up this morning it wasn't alarm clocks it was bells going off in my mind. It finally dawned on me the exact scenario that you just described! That yes, it probably is a birth announcement of Blanche to her grandparents and of course any new grandchild would be a sweetheart forever.
And the idea of there being too many Joseph's and going by his middle name Orlando makes sense as well, since that does seem to be a trait in the family at that time to have a first name but go by your second name.
Also on the side of the postcard that has two one cent stamps tere is a post mark from Lang Sask.
Thanks Dollylee for your post, it wasn't a waste of time, but a great help!
Karen