Most Milwaukeeans know names like Ben Marcus, Nate Zelazo and the Kohl Family. But what about Irving Solomon, Spencer Frank and Lee Lewis? If you're curious about these lesser-known pillars of the Milwaukee business community, head to the Jewish Museum Milwaukee, 1360 N. Prospect Ave., for a new exhibit. "Pushcarts to Professionals: The Evolution of Jewish Business in Milwaukee" showcases the impact of Jewish business on Milwaukee's culture and economy over the past 170 years.