I bought my first house in Arlington Heights in 1990. It was on Highland Avenue just south of downtown and was built in 1929. According to the neighbors– and the Arlington Heights telephone directories I’ve seen– the same family lived there until sometime in the 1980s.
While doing various remodeling projects, I found lots of old things behind walls, under staircases, and under eaves. The calendar above was rolled up and stuck in a corner of the attic, under a pile of insulation. It was accompanied by this one:

I recently ran across these calendars and decided to post images of them here. The fact that the 1942 calendar syncs up with 2009 is sort of an added bonus, actually making it useful.
The calendars are a nice size: the Arlington calendar measures about 16″ x 14″ and the Cherry-Burrell is 18″ x 24″. As you may expect, the paper is a bit delicate after 60-some years in storage.
I like a lot of things about this calendar: the practical tips given each month (“Not What You Get, but What You Hold Eases LIfe’s Burden when You’re Old.”); the days that were marked as noteworthy (April 13: “Lafayette Arrives From France 1777”); and the graphics for the phases of the moon. I may scan some of these images for use as handy clip art.
The Arlington Heights National Bank stood at 14 E Campbell Street, where the Chase Bank is today.
The second, a 1948 calendar from Cherry-Burrell, is interesting for the fact that underneath the tear-off calendar pages there’s a list of all the offices the company had around the world. Evidently, they were based at 427 W Randolph St, near the North Western train station, and specialized in milk and ice cream processing equipment. In fact, the company lives on, based in Wisconsin.

Update 1/11/2009: I also found this calendar from U O Colson Company, from 1948. Colson was based in Paris, Illinois, which is between Mattoon, Illinois and Terre Haute, Indiana. Here’s an interesting history of the company.
On the next page you’ll see photos of each page of the Arlington National Bank calendar. Click on each to see the complete image. I hope you enjoy them!