Following up on my June 15th post featuring a 'ghost ad' painted on a brick wall in St Paul....my dad had figured out that the beer brand on the sun faded advertisement was Milwaukee brewed, Blatz Beer. After doing some digging using Google, I found a key reference photo from a 1942 magazine article about Blatz Beer. The ad is about a pilsener beer flavor with the slogan 'For Good Taste' with a trapezoid shape around the word 'Blatz'. Looking at the additional photos I found, I can confirm the ghost ad is for Blatz beer. The trapezoid shape in the magazine ad matches the ghost ad, plus the word 'TASTE' is very clear to see from their slogan.