Staff meals

I got a question from a chef writing a paper on “meals served to kitchen works in previous administrations from approximately 1800-present.” From the materials I’ve read, there is very little indication of what the staff ate. My guess is that it’s rarely recorded, altho some hint may be obtained from some of the WH cookbooks that have been published. The only anecdote I can think of is that the staff used to pour the remainders of the alcoholic drinks after a party into a basin and add fruit juice to make a nice punch they would share.