Wrigley Field historical sleuthing: 1989 edition

Getty Images says (typo fixed):

JUNE 13: CHICAGO, IL - CIRCA 1990: Scoreboard at Wrigley Field in Chicago, Illinois.

Right away, I’m going to tell you this is not correct. On June 13, 1990 the Cubs hosted the Mets for a doubleheader at Wrigley Field, so “SAN FRAN” would not have been listed as the opponent on the Wrigley board.

What you see above is only part of the photo, since I had to crop it to fit the space. Here’s the entire photo:

Now, here’s where I will let you in on a couple of things that I have access to via Getty’s website that were good clues.