Transcript for "William Butler, reminiscences", DUP Pioneer History Collection, Page 1-2.

While in Liberty I became acquainted with a family who were going to start for Salt Lake Valley. They treated me well, and so I decided to go with them and advanced some money to get their provisions with, otherwise they would have had to stay another year.

We traveled on to Council Bluffs. Here I found Orson Hyde organizing companies for the Salt Lake Valley. He being the first Mormon I had heard preach, I noticed particularly what he said to the people—the promises he made that they should proceed in safety on their journey to the end.