[3] His bar was reportedly frequented by Americans and Britons, including Errol Flynn, Ernest Hemingway, and Graham Greene.

[12] Food companies began producing packaged sloppy joe, in cans with meat,[13] or just the sauce, such as Manwich, by the 1960s.

[15] A similar sandwich, the "dynamite", exists in the area around Woonsocket, Rhode Island, and is distinguished by the use of onions, bell peppers, and sometimes celery.

The rou jia mo, from China's Shaanxi Province, consists of stewed pork, beef, or lamb on "baijimo", a type of flatbread.

[18] In some stores in northern New Jersey, an unrelated sandwich made with a combination of lunch meats, such as turkey, roast beef, or especially pastrami, with coleslaw, Russian dressing, and Swiss cheese on three slices of rye bread is also known as a sloppy joe.