I've blogged about Mayor Zeidler before here. I belonged to the Socialist Party in the mid 1970s and got to know Frank a bit.
I'm sure I would disagree with Frank now about Iraq, but Frank was opposed to US participation in WWII too. That was a big mistake in retrospect. Not sure Frank would agree with that reassessment either.
Frank was a long time Luthern Sunday School teacher in Milwaukee. Here's a story on him from The Luthern.