This is a direct quote from the Encyclopedia of Mormonism, © 1992 Macmillan Publishing Company, under the heading "Forgeries of Historical Documents," page 523, third and fourth paragraphs. Italics, for emphasis, are mine:
The Hofmann forgeries of the 1980s have raised questions about some historical documents related to early Latter-day Saint history. In their search for new sources for information about the Church's formative period, historians were fascinated by the seemingly endless cache of historical documents supposedly located by Mark Hofmann. These documents purported to illuminate such topics as Joseph Smith's reception and translation of the records known as the Book of Mormon and the selection of his successor in Church leadership. Many, if not most, "Hofmann documents" turned out to be skillful forgeries. Hofmann had built a paper fortune from document dealing and duplicity, but when he was unable to produce additional promised documents for clients, he murdered a Salt Lake City businessman and the wife of an acquaintance in 1985. The subsequent investigation led to his arrest, confession of murder and forgery, and life sentence in the Utah State Prison.Note how the word "illuminate" has been substituted in place of the more accurate word "refute," and how the words "dealers and collectors" have been used in place of the appropriate words "apostles and prophets."
The story of the Hofmann forgeries is the subject of several books and numerous articles. The case has deeply embarrassed both historians and the dealers and collectors who handled his documents. It has also prompted greater caution and healthy skepticism about the validity of purported historical documents of unknown background or provenance.