When our son was born, in 1971, we received many of the same congratulatory cards with the same picture drawn by Charles Schultz.
The card said something about all a baby needs is a banjo. I digitized the card at one point, but now I have to find it...I also think it was/is in the Pete Seeger book (mine is orange, but there are other colors).
+_+_+_+_+_+_+_+_+_+_+_+_+_+_+_+_+_+_ Don''t miss Mike Iverson''s performance in Albuquerque November 19, 2008. Also...a clawhammer workshop for intermediate players is scheduled for November 23, 2008. Email firstname.lastname@example.org for details or to register