Mr. Watkins wrote the draft memorandum in the fall of 1993, but White House officials said it was not discovered until a week ago.
Mr. Watkins also hinted in the draft memorandum that he might not have told the full story to investigators who reviewed the dismissals.
In the last few weeks, negotiators reached agreement in principal and began circulating a draft memorandum of understanding.
Out of these interviews and other research has come the draft memorandum that serves as the basis for the hearing.
In fact, the draft memorandum cites only the criteria to be considered in determining local opposition, not whether the casino should be approved.
Executives at Texaco said that the draft memorandum was not subject to discovery, because documents created after March 1994 did not have to be turned over.
Texaco produced documents dated as late as November 1994 - some five months after the draft memorandum was written.
Mr. Bush is mentioned in another document released at the trial, a draft memorandum from the National Security Council.
The draft memorandum of understanding came about after arduous negotiations.
A draft memorandum of understanding is to be signed, or initialled, at the forthcoming Helsinki Summit.