In 1954 Reuben J. Clark gave an address to seminary and institute employees on the subject, "When Are the Writings and Sermons of Church Leaders Entitled to the Claim of Scripture?" The title itself interested me, because it claims to answer the question, "When is something scripture?" This should have lots of relevance because it is related to the question, "What is official doctrine?" a question that pops up during almost any dialogue between critics and apologists. Here is the link to the pdf:http://emp.byui.edu/marrottr/ClarkWhenAreWritings.pdf
Then I figured out why it isn't cited for that purpose much. If you go down to the first column on page 4 of the pdf, you find this paragraph:
Reuben J. Clark wrote:
We have also the Book of Abraham, which is a direct translation of the writings of Abraham. Here again we have a revelatory translation upon which we may rely.