CHICAGO — In mid-20th-century Chicago, walking along the 200 block of West Madison Street in Chicago, you could not help but notice the big sign with the colorful neon lighthouse and the words “Home of Cohasset Punch.” This eye-catching image hung over the sidewalk in front of the Ladner Bros. tavern. The old-timey bar was just one of many local places — including legends like Don Roth’s Blackhawk and Chez Paree — where you could sip a Cohasset Punch cocktail. As reported in Bonfort’s Wine and Spirits Circular in 1902, Cohasset Punch was created by mixologist Thomas Newman, a business partner…