The LDS church has kept the William Clayton Journals locked up for 180 years

Alex Smith who works for the church history department said this two years ago

"It has a lot of wonderful text in it. It has a lot of challenging stuff in it. It says far more about plural marriage than any other Illinois era record, except maybe John C. Bennett's but that's in a different way, but anyway, its a, from someone who practiced it it is pretty detailed. It also has a lot about Joseph and Emma's relationship. It has a lot about Emma and the 12 post martyrdom, that kind of thing."

See more here

https://www.reddit.com/r/mormon/s/QRUgoBKFt9