But you do know that growlers go much farther back, right?
http://www.bottless.net/The_History_of_The_Beer_Growler_s/605.htm
Article has some cool pictures of buckets of beer being filled and carried.
"Sec. 564. Canning Beer Prohibited. —That it shall be unlawful for any person, firm or corporation owning, operating, managing or controlling, or bartender or any employee working in any dramshop, tippling house or saloon to sell, or permit the sale of, draught or keg beer deposited, or to be deposited in cans, cups, buckets, jars, bottles, jugs, crocks, pitchers, or other utensils than glasses or steins, and drunk or to be drunk on the premises; or to permit what is commonly termed and known as "canning beer," "rushing the can," or "rushing the growler," to be drunk on the premises where the sale Is made. Ord. A'o. 1768; January 29, 1912. Little Rock (Ark.) Regulations pertaining to the growler trade.—Twenty cities prohibited the growler trade and 24 other cities, reported some restrictions on it. Several restrictions were in the form of prohibition to sell in this way to women and to minors. Wilmington, Del., required an extra license of $25 from dealers who supplied the growler trade. Four cities withheld the growler privilege from saloons, permitting it only in the case of dealers other than those selling by the drink. Eight cities limited the quantity which might be sold in a growler. One pint at a time was the limit set in Paterson, N. J. ; a quart in Allentown, Lancaster, and York, Pa.; and a gallon in Oakland, Cal., and Galveston, San Antonio, and Houston, Tex. - Census Bureau, 1915"