David Whitmer's account of the repository in Cumorah

The accounts of Brigham Young, Heber C. Kimball, and Wilford Woodruff about the repository of Nephite records in the Hill Cumorah in New York are fairly well known. 

Or at least they once were, back in the day when the Seminary/Institute manuals and Church history books included the accounts. 

If you're unaware of what I'm talking about, go here:

https://www.mobom.org/mormons-depository 

Other accounts are less well known.

This one was from David Whitmer, as told to Edward Stevenson.

... It was likewise stated to me by David Whitmer in the year 1877 that Oliver Cowdery told him that the Prophet Joseph and himself had seen this room [in the Hill Cumorah] and that it was filled with treasure, and on a table therein were the breastplate and the sword of Laban, as well as the portion of gold plates not yet translated, and that these plates were bound by three small gold rings, and would also be translated, as was the first portion in the days of Joseph. 

When they are translated much useful information will be brought to light. 

But till that day arrives, no Rochester adventurers shall ever see them or the treasures, although science and mineral rods testify that they are there.

Edward Stevenson, Reminiscences of Joseph, the Prophet and the Coming Forth of the Book of Mormon (Salt Lake City: Edward Stevenson, 1893), 15.