Ages ago I posted the above press photo of the Manson Family knives. There was a little discussion in the comments about when the photo was taken with Cielodrive commenting that the LIE album wasn't released until March of 1970. The photo ran in newspapers in 1984 on an anniversary for the TLB murders.
The caption says that the knives were confiscated in the Barker Raids. It is obviously a staged photo.
Among the recent documents I obtained there is a list of the knives taken into custody by Inyo County authorities. I do think that the knives in the photo were from the Barker Raids. There appears to be the same number of knives in the list as the photo. There are a couple of kitchen knives in the photo as well.