The official website of the Jim Crow Museum at Ferris State University in northern Michigan. Probably the most comprehensive site on Jim Crow American I could find! Warning: There are many graphic and offensive pieces of memorabilia on this site.
I've never seen a card like this - amazing. Don't think that this would have gone too well waaaaay down south. Has to be VERY RARE CARD !  1945 POSTCARD BLACK AMERICANA WHITE GIRL KISSING BLACK SOLDIER VALENTINE