buck slip

noun

1. Informal.,  a paper attached to and showing the destination and source of an interoffice memorandum, file, or the like.

Example Sentences

“I’ll never forget Gordon sitting down, taking out his buck slip and saying, ‘What do you need?’”

Read more on New York Times

Then one copy would come to a given branch, a buck slip slapped on it, and it would be routed around the branch.

Read more on Washington Post