Found a postcard advertising a Thomas Dewey appearance at Wrigley Field when he was running for president. What musuem/organization might want it? I don’t expect it’s worth a lot of money (if so, all bets are off).
you might have a local historical society that might want it.
the Cubs or William Wrigley Jr. Company might be interested.
The Baseball Hall of Fame might want it.
I’ve appraised the political ephemera for the Benjamin Harrison home here in Indianapolis. In very good shape, your postcard is most probably worth about $8-$10. Your local library might be interested, in addition to any local state museum you may live near.