Most of us have heard about and read transcriptions of William Furlsbury Carter's missionary journal. Thanks to newly released information about early Mormon missionaries here is a small portion of his journal for when he got to Illinois and visited with the Tripps, Dooleys and his brother, Phillip Libby Carter. For a older, sick guy his handwriting is very good.
The whole journal can be viewed by going to this link: https://history.lds.org/missionary/individual/william-foulsberry-carter-1811?lang=eng
Then click on "William F Carter Journal..." - it is all there thanks to his granddaughter, Margery Ann Kinder Wing who brought it in to the Church History Department in 1966 and allowed them to Xerox it and then took the journal back. Who has this journal now? That is a BIG question.