In this letter from 1980, David Berglund asks David Koch for more financial support for the Libertarian Party to support other state electoral campaigns.
Here is an excerpt:
“After all you’ve done for the campaign this year, I’m almost embarrassed to ask you to consider contributing to another important Libertarian campaign, one that looks like a winner in southern California. And yet I feel you’d want to make sure that we don’t miss the boat on this one.”