The jug is shown on a ca. 1920s Monongah catalog sheet on p. 222 in Zastowney's "Lancaster Glass" book. Also shown are bi-color (amber/crystal) stemware, a sherbet and a plate. This catalog sheet is also shown in color in Dean Six's "West Virginia Glass Between the World Wars" on p. 86. Six's book devotes 10 pages to Monongah with a number of photos. The catalog sheet designates the jug as #20 w/o cover, the stemware as #6102, and the deep plate etching as #808.
Thanks to Ed Sawicki, Gregg Jones & Suzanne Black for assisting on ID.