Side panel of Imperial and Black Eagle on right both have ""PACKED EXPRESSLY FOR"
Wow - only known indoor example!
Imperial Extra Pale Beer (Weibel no mandatory)
This can states "PACKED EXPRESSLY FOR WEIBLEL BREWING GO. NEW HAVEN CONN.". That statement alone means Weibel did not can the beer at their plant. Since Weibel closed in 1936, and since this can is circa 1938, it is widely accepted this can is brewed and canned by Manhattan Brewing Company of Chicago.
While no known records from the Manhattan Brewing Company mention Imperial, the can design is similar to other Manhattan cans such as circa 1938 Black Eagle which has a "PACKED EXPRESSLY FOR THE CLASS AND NACHODS BREWING COMPANY PHILADELPHIA, PA." statement (Class and Nachod changed their name to Poth in 1936).
Other circumstantial evidence includes the cool advertisement to the right from 905 liquor stores in a 1938 St. Louis Globe newspaper courtesy Bob L. Memorial Day was originally called Decoration Day. This ad shows Imperial right alongside Mountain Top and Angler which are known Manhattan brands.
This *was* all the evidence I need to believe Imperial is part of the Manhattan family. However, myth-buster research by Bob L strongly suggests this can is actually by St. Louis ABC! See the story on the Rusty Bunch website to read the great detective work by Bob!
The outdoor example below was found by myself and a buddy in a dump adjacent to Montauk State Park in late 1994. Other than the can, no other Imperial breweriana (bottles, etc) is known to exist.