I'm going from memory here, but I seem to remember a rather uniform policy on railroad and pullman dining cars that "waiters must not take verbal orders" or some such. Presumably it was an auditing thing, they wanted a written record of orders. And back in the bad old days it was probably not unusual for a waiter to be illiterate. I have a vague memory of getting carbonized order slips on which you wrote what you wanted. So having little menus on which you checked off a box would be a reasonable variation of that.
JBWX
Edited 4 time(s). Last edit at 02/07/2014 03:49PM by John West.